Descriptor: "[ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph]" / Publisher: iop publishing - Searchworks@Jio Institute Digital Library Search Results

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15 results on '"[ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph]"'

1. Exploring cosmic origins with CORE: cosmological parameters

Author: Daniela Paoletti, Nicola Bartolo, Jens Chluba, J. Greenslade, P. Vielva, Mattia Negrello, Karl Young, Matteo Bonato, Andrea Tartari, Alessandro Paiella, Alessandro Coppolecchia, Andrea Caputo, Nicola Vittorio, V. Lindholm, Anthony Challinor, Agnieszka Pollo, Francois Boulanger, Luca Lamagna, Simone Ferraro, Martin Crook, D. McCarthy, M. López-Caniego, Ted Kisner, G. de Gasperis, L. Polastri, Alessandro Melchiorri, Josquin Errard, Rien van de Weygaert, D. Tramonte, Jose Alberto Rubino-Martin, C. J. A. P. Martins, Deanna C. Hooper, Matthieu Roman, Gianfranco De Zotti, Neil Trappe, M. Piat, Daniel Baumann, Gianluca Polenta, Jussi Valiviita, M. Tomasi, Paolo de Bernardis, Christophe Ringeval, Marco De Petris, Marco Bersanelli, Mario Zannoni, Giuseppe D'Alessandro, R. Fernandez-Cobos, Julien Lesgourgues, Paolo Natoli, Laura Salvati, Miguel Quartin, Thomas Kitching, R. Allison, Antony Lewis, K. Kiiveri, Carole Tucker, Diego Molinari, M. Kunz, Joseph J. Mohr, Ricardo Genova-Santos, C. Hervias-Caimapo, Jean-Baptiste Melin, Sebastian Grandis, Sylvain Martin, Michele Liguori, Shaul Hanany, Mario Ballardini, Vincent Vennin, Eleonora Di Valentino, Enrique Martinez-Gonzalez, Jose M. Diego, Giovanni Cabass, Hannu Kurki-Suonio, Jacques Delabrouille, J. González-Nuevo, Anthony Lasenby, F. Piacentini, Jochem J. A. Baselmans, Gemma Luzzi, S. Hagstotz, Tiziana Trombetti, Stephen M. Feeney, Alessio Notari, C. S. Carvalho, Fabio Finelli, Simone Paradiso, Silvia Masi, James G. Bartlett, Carlos Hernández-Monteagudo, Massimiliano Lattanzi, A. J. Banday, Thejs Brinckmann, Cora Dvorkin, Eric Hivon, Sebastien Clesse, Alessandro Buzzelli, Vivian Poulin, Ana Achúcarro, Martina Gerbino, M. Ashdown, A. Bonaldi, Luca Pagano, Julian Borrill, Will Handley, Martino Calvo, R. Banerji, Ivan Charles, Alessandro Monfardini, Frederico Arroja, S. Basak, Mathieu Remazeilles, Giampaolo Pisano, I. Colantoni, Silvia Galli, Gérard Vermeulen, Francesco Forastieri, Elena Giusarma, Dhiraj Kumar Hazra, François R. Bouchet, Zhen-Yi Cai, Carlo Burigana, G. Castellano, Peter A. R. Ade, Matthew Hills, Bruno Maffei, Martin Bucher, Bartjan van Tent, Guillaume Patanchon, Helsinki Institute of Physics, Department of Physics, String Theory (ITFA, IoP, FNWI), Astronomy, Institut d'Astrophysique de Paris ( IAP ), Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Institut national des sciences de l'Univers ( INSU - CNRS ) -Centre National de la Recherche Scientifique ( CNRS ), Institut Lagrange de Paris, Sorbonne Universités, Laboratoire d'Annecy-le-Vieux de Physique Théorique ( LAPTH ), Université Savoie Mont Blanc ( USMB [Université de Savoie] [Université de Chambéry] ) -Centre National de la Recherche Scientifique ( CNRS ), AstroParticule et Cosmologie ( APC - UMR 7164 ), Centre National de la Recherche Scientifique ( CNRS ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Observatoire de Paris-Université Paris Diderot - Paris 7 ( UPD7 ) -Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ), Institut d'astrophysique spatiale ( IAS ), Université Paris-Sud - Paris 11 ( UP11 ) -Institut national des sciences de l'Univers ( INSU - CNRS ) -Centre National de la Recherche Scientifique ( CNRS ), Institut de recherche en astrophysique et planétologie ( IRAP ), Université Paul Sabatier - Toulouse 3 ( UPS ) -Observatoire Midi-Pyrénées ( OMP ) -Centre National de la Recherche Scientifique ( CNRS ), Département de Recherche Fondamentale sur la Matière Condensée ( DRFMC ), Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ), Département de Physique des Particules (ex SPP) ( DPP ), Institut de Recherches sur les lois Fondamentales de l'Univers ( IRFU ), Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Université Paris-Saclay, Institut Néel ( NEEL ), Université Grenoble Alpes [Saint Martin d'Hères]-Centre National de la Recherche Scientifique ( CNRS ), Laboratoire de Physique Nucléaire et de Hautes Énergies ( LPNHE ), Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Université Paris Diderot - Paris 7 ( UPD7 ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire de Physique Théorique d'Orsay [Orsay] ( LPT ), Université Paris-Sud - Paris 11 ( UP11 ) -Centre National de la Recherche Scientifique ( CNRS ), CORE, Di Valentino, E, Brinckmann, T, Gerbino, M, Poulin, V, Bouchet, F, Lesgourgues, J, Melchiorri, A, Chluba, J, Clesse, S, Delabrouille, J, Dvorkin, C, Forastieri, F, Galli, S, Hooper, D, Lattanzi, M, Martins, C, Salvati, L, Cabass, G, Caputo, A, Giusarma, E, Hivon, E, Natoli, P, Pagano, L, Paradiso, S, Rubiño-Martin, J, Achúcarro, A, Ade, P, Allison, R, Arroja, F, Ashdown, M, Ballardini, M, Banday, A, Banerji, R, Bartolo, N, Bartlett, J, Basak, S, Baumann, D, de Bernardis, P, Bersanelli, M, Bonaldi, A, Bonato, M, Borrill, J, Boulanger, F, Bucher, M, Burigana, C, Buzzelli, A, Cai, Z, Calvo, M, Carvalho, C, Castellano, G, Challinor, A, Charles, I, Colantoni, I, Coppolecchia, A, Crook, M, D'Alessandro, G, De Petris, M, De Zotti, G, Diego, J, Errard, J, Feeney, S, Fernandez-Cobos, R, Ferraro, S, Finelli, F, de Gasperis, G, Génova-Santos, R, González-Nuevo, J, Grandis, S, Greenslade, J, Hagstotz, S, Hanany, S, Handley, W, Hazra, D, Hernández-Monteagudo, C, Hervias-Caimapo, C, Hills, M, Kiiveri, K, Kisner, T, Kitching, T, Kunz, M, Kurki-Suonio, H, Lamagna, L, Lasenby, A, Lewis, A, Liguori, M, Lindholm, V, Lopez-Caniego, M, Luzzi, G, Maffei, B, Martin, S, Martinez-Gonzalez, E, Masi, S, Matarrese, S, Mccarthy, D, Melin, J, Mohr, J, Molinari, D, Monfardini, A, Negrello, M, Notari, A, Paiella, A, Paoletti, D, Patanchon, G, Piacentini, F, Piat, M, Pisano, G, Polastri, L, Polenta, G, Pollo, A, Quartin, M, Remazeilles, M, Roman, M, Ringeval, C, Tartari, A, Tomasi, M, Tramonte, D, Trappe, N, Trombetti, T, Tucker, C, Väliviita, J, van de Weygaert, R, Van Tent, B, Vennin, V, Vermeulen, G, Vielva, P, Vittorio, N, Young, K, Zannoni, M, Institut d'Astrophysique de Paris (IAP), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Annecy-le-Vieux de Physique Théorique (LAPTH), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), AstroParticule et Cosmologie (APC (UMR_7164)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), Institut d'astrophysique spatiale (IAS), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Institut de recherche en astrophysique et planétologie (IRAP), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), Département de Recherche Fondamentale sur la Matière Condensée (DRFMC), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Département de Physique des Particules (ex SPP) (DPP), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Institut Néel (NEEL), Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE (UMR_7585)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Théorique d'Orsay [Orsay] (LPT), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Cryogénie (NEEL - Cryo), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Département de Physique des Particules (ex SPP) (DPhP), Hélium : du fondamental aux applications (NEEL - HELFA), Sorbonne Université (SU), Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), and Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)
Subjects: gravitation: model, [ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph], Cosmic microwave background, cosmological parameters from CMBR, CMBR experiments, neutrino masses from cosmology, BACKGROUND ANISOTROPIES, cosmic background radiation: polarization, Astrophysics, baryon: oscillation: acoustic, NEUTRINO MASS, 01 natural sciences, COBE FIRAS INSTRUMENT, current: constraint, DESI, High Energy Physics - Phenomenology (hep-ph), CMBR experiments, CMB POLARIZATION, dark energy, 010303 astronomy & astrophysics, general relativity and quantum cosmology, QC, cosmological parameters from CMBR, neutrino masses from cosmology, media_common, helium: primordial, QB, Physics, birefringence, hep-th, formation, Astrophysics::Instrumentation and Methods for Astrophysics, hep-ph, TEMPERATURE-REDSHIFT RELATION, high energy physics - theory, inflation: model, high energy physics - phenomenology, curvature, symbols, astro-ph.CO, CMBR experiment, FUNDAMENTAL CONSTANTS, Astrophysics - Cosmology and Nongalactic Astrophysics, Cosmology and Nongalactic Astrophysics (astro-ph.CO), satellite: Planck, ANGULAR POWER SPECTRUM, Primordial fluctuations, media_common.quotation_subject, gr-qc, Dark matter, satellite, FOS: Physical sciences, General Relativity and Quantum Cosmology (gr-qc), Astrophysics::Cosmology and Extragalactic Astrophysics, NO, BROKEN LEPTON NUMBER, symbols.namesake, FIS/05 - ASTRONOMIA E ASTROFISICA, Settore FIS/05 - Astronomia e Astrofisica, FINE-STRUCTURE CONSTANT, 0103 physical sciences, ionization, LARGE-SCALE STRUCTURE, structure, Planck, Reionization, PROBING NEUTRINO MASSES, Inflation (cosmology), 010308 nuclear & particles physics, fluctuation: primordial, Astronomy and Astrophysics, dark matter: annihilation, sensitivity, 115 Astronomy, Space science, MICROWAVE-ANISOTROPY-PROBE, Universe, recombination, COLD DARK-MATTER, High Energy Physics - Theory (hep-th), 13. Climate action, Dark energy, DIGITAL SKY SURVEY, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], MICROWAVE BACKGROUND POLARIZATION
Abstract: We forecast the main cosmological parameter constraints achievable with the CORE space mission which is dedicated to mapping the polarisation of the Cosmic Microwave Background (CMB). CORE was recently submitted in response to ESA's fifth call for medium-sized mission proposals (M5). Here we report the results from our pre-submission study of the impact of various instrumental options, in particular the telescope size and sensitivity level, and review the great, transformative potential of the mission as proposed. Specifically, we assess the impact on a broad range of fundamental parameters of our Universe as a function of the expected CMB characteristics, with other papers in the series focusing on controlling astrophysical and instrumental residual systematics. In this paper, we assume that only a few central CORE frequency channels are usable for our purpose, all others being devoted to the cleaning of astrophysical contaminants. On the theoretical side, we assume LCDM as our general framework and quantify the improvement provided by CORE over the current constraints from the Planck 2015 release. We also study the joint sensitivity of CORE and of future Baryon Acoustic Oscillation and Large Scale Structure experiments like DESI and Euclid. Specific constraints on the physics of inflation are presented in another paper of the series. In addition to the six parameters of the base LCDM, which describe the matter content of a spatially flat universe with adiabatic and scalar primordial fluctuations from inflation, we derive the precision achievable on parameters like those describing curvature, neutrino physics, extra light relics, primordial helium abundance, dark matter annihilation, recombination physics, variation of fundamental constants, dark energy, modified gravity, reionization and cosmic birefringence. (ABRIDGED), Comment: 90 pages, 25 Figures. Revised version with new authors list and references
Published: 2018
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2. Science with the space-based interferometer eLISA. II: gravitational waves from cosmological phase transitions

Author: Germano Nardini, Thomas Konstandin, Jose Miguel No, Stephan J. Huber, Mark Hindmarsh, Antoine Petiteau, David J. Weir, Pedro Schwaller, Chiara Caprini, Jonathan Kozaczuk, Geraldine Servant, Institut de Physique Théorique - UMR CNRS 3681 (IPHT), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), Institut de Physique Théorique - UMR CNRS 3681 ( IPHT ), Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Université Paris-Saclay-Centre National de la Recherche Scientifique ( CNRS ), AstroParticule et Cosmologie ( APC - UMR 7164 ), Centre National de la Recherche Scientifique ( CNRS ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Observatoire de Paris-Université Paris Diderot - Paris 7 ( UPD7 ) -Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ), Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)
Subjects: Phase transition, Cosmology and Nongalactic Astrophysics (astro-ph.CO), gravitational radiation: stochastic, 530 Physics, media_common.quotation_subject, Physics beyond the Standard Model, [ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph], FOS: Physical sciences, Astrophysics, General Relativity and Quantum Cosmology (gr-qc), Magnetohydrodynamic turbulence, 01 natural sciences, General Relativity and Quantum Cosmology, [ PHYS.GRQC ] Physics [physics]/General Relativity and Quantum Cosmology [gr-qc], Gravitational wave background, High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, ddc:530, 010306 general physics, detector: design, media_common, Physics, 010308 nuclear & particles physics, Gravitational wave, new physics, Detector, turbulence, gravitational radiation: background, Astronomy and Astrophysics, critical phenomena, gravitational radiation detector: satellite, sensitivity, Universe, background: stochastic, Computational physics, Interferometry, High Energy Physics - Phenomenology, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], [PHYS.GRQC]Physics [physics]/General Relativity and Quantum Cosmology [gr-qc], gravitational radiation detector: interferometer, [ PHYS.HPHE ] Physics [physics]/High Energy Physics - Phenomenology [hep-ph], [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: We investigate the potential for the eLISA space-based interferometer to detect the stochastic gravitational wave background produced by strong first-order cosmological phase transitions. We discuss the resulting contributions from bubble collisions, magnetohydrodynamic turbulence, and sound waves to the stochastic background, and estimate the total corresponding signal predicted in gravitational waves. The projected sensitivity of eLISA to cosmological phase transitions is computed in a model-independent way for various detector designs and configurations. By applying these results to several specific models, we demonstrate that eLISA is able to probe many well-motivated scenarios beyond the Standard Model of particle physics predicting strong first-order cosmological phase transitions in the early Universe., Comment: 45 pages, 7 figures. Accepted for publication in JCAP, added discussion on noise from galactic binaries and citations
Published: 2016
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3. Mimetic gravity as DHOST theories

Author: Michele Mancarella, Filippo Vernizzi, David Langlois, Karim Noui, AstroParticule et Cosmologie ( APC - UMR 7164 ), Centre National de la Recherche Scientifique ( CNRS ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Observatoire de Paris-Université Paris Diderot - Paris 7 ( UPD7 ) -Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ), Institut de Physique Théorique - UMR CNRS 3681 ( IPHT ), Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Université Paris-Saclay-Centre National de la Recherche Scientifique ( CNRS ), Fédération de recherche Denis Poisson ( FRDP ), Université d'Orléans ( UO ) -Centre National de la Recherche Scientifique ( CNRS ), AstroParticule et Cosmologie (APC (UMR_7164)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), Institut de Physique Théorique - UMR CNRS 3681 (IPHT), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Fédération de recherche Denis Poisson (FDP), Université d'Orléans (UO)-Université de Tours-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Institut Denis Poisson (IDP), Université d'Orléans (UO)-Université de Tours (UT)-Centre National de la Recherche Scientifique (CNRS), Langlois, D, Mancarella, M, Noui, K, Vernizzi, F, Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Université de Tours (UT)-Université d'Orléans (UO), and Centre National de la Recherche Scientifique (CNRS)-Université de Tours-Université d'Orléans (UO)
Subjects: High Energy Physics - Theory, Modified gravity, Cosmology and Nongalactic Astrophysics (astro-ph.CO), [ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph], FOS: Physical sciences, General Relativity and Quantum Cosmology (gr-qc), 01 natural sciences, General Relativity and Quantum Cosmology, Cosmological perturbation theory, [ PHYS.GRQC ] Physics [physics]/General Relativity and Quantum Cosmology [gr-qc], [ PHYS.HTHE ] Physics [physics]/High Energy Physics - Theory [hep-th], Theoretical physics, Quadratic equation, 0103 physical sciences, Effective field theory, dark energy, Physics, diffeomorphism: invariance, [PHYS.HTHE]Physics [physics]/High Energy Physics - Theory [hep-th], 010308 nuclear & particles physics, Degenerate energy levels, perturbation: linear, mathematical methods, Astronomy and Astrophysics, stability, Symmetry (physics), Action (physics), field theory: scalar, High Energy Physics - Theory (hep-th), gravitation: scalar tensor, Dark energy theory, [PHYS.GRQC]Physics [physics]/General Relativity and Quantum Cosmology [gr-qc], Dark energy, Diffeomorphism, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], gravitation: higher-order, Scalar field, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: We show that theories of mimetic gravity can be viewed as degenerate higher-order scalar-tensor (DHOST) theories that admit an extra local (gauge) symmetry in addition to the usual diffeomorphism invariance. We reformulate and classify mimetic theories in this perspective. Using the effective theory of dark energy, recently extended to include DHOST theories, we then investigate the linear perturbations about a homogeneous and isotropic background for all mimetic theories. We also include matter, in the form of a $k$-essence scalar field, and we derive the quadratic action for linear perturbations in this case., Comment: 22 pages, 1 figure, references added and discussion on the instability modified. Matches the version published on JCAP
Published: 2019
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4. Non Gaussianities from quantum decoherence during inflation

Author: Jérôme Martin, Vincent Vennin, Institut d'Astrophysique de Paris (IAP), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), AstroParticule et Cosmologie (APC (UMR_7164)), Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), Institut d'Astrophysique de Paris ( IAP ), Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Institut national des sciences de l'Univers ( INSU - CNRS ) -Centre National de la Recherche Scientifique ( CNRS ), AstroParticule et Cosmologie ( APC - UMR 7164 ), and Centre National de la Recherche Scientifique ( CNRS ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Observatoire de Paris-Université Paris Diderot - Paris 7 ( UPD7 ) -Commissariat à l'énergie atomique et aux énergies alternatives ( CEA )
Subjects: High Energy Physics - Theory, cosmological model, Cosmology and Nongalactic Astrophysics (astro-ph.CO), satellite: Planck, Quantum decoherence, [ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph], Cosmic microwave background, Cosmic background radiation, FOS: Physical sciences, General Relativity and Quantum Cosmology (gr-qc), cosmic background radiation, Astrophysics::Cosmology and Extragalactic Astrophysics, power spectrum, 01 natural sciences, General Relativity and Quantum Cosmology, [ PHYS.GRQC ] Physics [physics]/General Relativity and Quantum Cosmology [gr-qc], [ PHYS.HTHE ] Physics [physics]/High Energy Physics - Theory [hep-th], Open quantum system, symbols.namesake, Theoretical physics, trispectrum, 0103 physical sciences, correlation function, inflation, Planck, decoherence, 010303 astronomy & astrophysics, perturbation theory, Physics, [PHYS.HTHE]Physics [physics]/High Energy Physics - Theory [hep-th], 010308 nuclear & particles physics, Lindblad equation, quantum mechanics, Astronomy and Astrophysics, bispectrum, High Energy Physics - Theory (hep-th), non-Gaussianity, [PHYS.GRQC]Physics [physics]/General Relativity and Quantum Cosmology [gr-qc], symbols, Trispectrum, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Bispectrum, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: Inflationary cosmological perturbations of quantum-mechanical origin generically interact with all degrees of freedom present in the early Universe. Therefore, they must be viewed as an open quantum system in interaction with an environment. This implies that, under some conditions, decoherence can take place. The presence of the environment can also induce modifications in the power spectrum, thus offering an observational probe of cosmic decoherence. Here, we demonstrate that this also leads to non Gaussianities that we calculate using the Lindblad equation formalism. We show that, while the bispectrum remains zero, the four-point correlation functions become non-vanishing. Using the Cosmic Microwave Background measurements of the trispectrum by the Planck satellite, we derive constraints on the strength of the interaction between the perturbations and the environment and show that, in some regimes, they are more stringent than those arising from the power spectrum., 13 pages (total 30 pages), 4 figures, matches published version in JCAP
Published: 2018
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5. Velocity Memory Effect for polarized gravitational waves

Author: Pengming Zhang, Gary W. Gibbons, Christian Duval, Peter A. Horvathy, Centre de Physique Théorique - UMR 7332 (CPT), Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Mathématiques et Physique Théorique (LMPT), Centre National de la Recherche Scientifique (CNRS)-Université de Tours, Centre de Physique Théorique - UMR 7332 ( CPT ), Aix Marseille Université ( AMU ) -Université de Toulon ( UTLN ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire de Mathématiques et Physique Théorique ( LMPT ), and Université de Tours-Centre National de la Recherche Scientifique ( CNRS )
Subjects: High Energy Physics - Theory, gravitational radiation: polarization, [ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph], sandwich, FOS: Physical sciences, General Relativity and Quantum Cosmology (gr-qc), Rotation, Isometry (Riemannian geometry), rotation, 01 natural sciences, General Relativity and Quantum Cosmology, [ PHYS.GRQC ] Physics [physics]/General Relativity and Quantum Cosmology [gr-qc], [ PHYS.HTHE ] Physics [physics]/High Energy Physics - Theory [hep-th], Gravitation, particle: velocity, 0103 physical sciences, Particle velocity, 010306 general physics, High Energy Astrophysical Phenomena (astro-ph.HE), Physics, [PHYS.HTHE]Physics [physics]/High Energy Physics - Theory [hep-th], 010308 nuclear & particles physics, Gravitational wave, Linear polarization, group: isometry, gravitational radiation, Astronomy and Astrophysics, Symmetry (physics), Classical mechanics, High Energy Physics - Theory (hep-th), gravitation, trajectory, [PHYS.GRQC]Physics [physics]/General Relativity and Quantum Cosmology [gr-qc], Astrophysics - High Energy Astrophysical Phenomena, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Falling (sensation)
Abstract: Circularly polarized gravitational sandwich waves exhibit, as do their linearly polarized counterparts, the Velocity Memory Effect: freely falling test particles in the flat after-zone fly apart along straight lines with constant velocity. In the inside zone their trajectories combine oscillatory and rotational motions in a complicated way. For circularly polarized periodic gravitational waves some trajectories remain bounded, while others spiral outward. These waves admit an additional "screw" isometry beyond the usual five. The consequences of this extra symmetry are explored., Comment: 21 pages, 11 figures. To be published in JCAP
Published: 2018
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6. Search for gamma-ray spectral modulations in Galactic pulsars

Author: Francesca Calore, Jhilik Majumdar, Dieter Horns, Laboratoire d'Annecy-le-Vieux de Physique Théorique (LAPTH), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Annecy-le-Vieux de Physique Théorique ( LAPTH ), and Université Savoie Mont Blanc ( USMB [Université de Savoie] [Université de Chambéry] ) -Centre National de la Recherche Scientifique ( CNRS )
Subjects: axions, [ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph], Astrophysics::High Energy Astrophysical Phenomena, magnetic field: galaxy, galactic magnetic fields, Astrophysics, 01 natural sciences, energy dependence, Primakoff effect, Pulsar, photon axion: interaction, 0103 physical sciences, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, pulsar, Physics, 010308 nuclear & particles physics, photon, scaling, Gamma ray, Astronomy and Astrophysics, crossing, oscillation, photon axion: coupling, gamma ray: emission, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], axion-like particles, spectral, [ PHYS.HPHE ] Physics [physics]/High Energy Physics - Phenomenology [hep-ph], axion: mass, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], statistical, signature
Abstract: International audience; Well-motivated extensions of the standard model predict ultra-light and fundamental pseudo-scalar particles (e.g., axions or axion-like particles: ALPs). Similarly to the Primakoff-effect for axions, ALPs can mix with photons and consequently be searched for in laboratory experiments and with astrophysical observations. Here, we search for energy-dependent modulations of high-energy gamma-ray spectra that are tell-tale signatures of photon-ALPs mixing. To this end, we analyze the data recorded with the Fermi-LAT from Galactic pulsars selected to have a line of sight crossing spiral arms at a large pitch angle. The large-scale Galactic magnetic field traces the shape of spiral arms, such that a sizable photon-ALP conversion probability is expected for the sources considered. For the nearby Vela pulsar, the energy spectrum is well described by a smooth model spectrum (a power-law with a sub-exponential cut-off) while for the six selected Galactic pulsars, a common fit of the ALPs parameters improves the goodness of fit in comparison to a smooth model spectrum with a significance of 4.6 σ. We determine the most-likely values for mass ma and coupling gaγγ to be ma=(3.6−0.2 stat.+0.5 stat.± 0.2syst. ) neV and gaγγ=(2.3−0.4stat.+0.3 stat.± 0.4syst.)× 10−10 GeV−1. In the error budget, we consider instrumental effects, scaling of the adopted Galactic magnetic field model (± 20 %), and uncertainties on the distance of individual sources. The best-fit parameters are by a factor of ≈ 3 larger than the current best limit on solar ALPs generation obtained with the CAST helioscope, although known modifications of the photon-ALP mixing in the high density solar environment could provide a plausible explanation for the apparent tension between the helioscope bound and the indication for photon-ALPs mixing reported here.
Published: 2018
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7. Cold light dark matter in extended seesaw models

Author: Julian Heeck, Sami Boulebnane, Anne Nguyen, Daniele Teresi, Centre de Physique Théorique [Palaiseau] (CPHT), École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique Théorique [Palaiseau] ( CPHT ), and École polytechnique ( X ) -Centre National de la Recherche Scientifique ( CNRS )
Subjects: Particle physics, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Structure formation, spontaneous symmetry breaking: U(1), [ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph], Physics beyond the Standard Model, Dark matter, FOS: Physical sciences, dark matter: production, 01 natural sciences, High Energy Physics - Phenomenology (hep-ph), neutrino: decay, Seesaw molecular geometry, 0103 physical sciences, neutrino: mass generation, 010306 general physics, Light dark matter, Physics, seesaw model: inverse, new physics, 010308 nuclear & particles physics, dark matter: mass, High Energy Physics::Phenomenology, Astronomy and Astrophysics, Symmetry (physics), High Energy Physics - Phenomenology, neutrino: right-handed, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], Particle, [ PHYS.HPHE ] Physics [physics]/High Energy Physics - Phenomenology [hep-ph], Neutrino, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: We present a thorough discussion of light dark matter produced via freeze-in in two-body decays A -> B DM. If A and B are quasi-degenerate, the dark matter particle has a cold spectrum even for keV masses. We show this explicitly by calculating the transfer function that encodes the impact on structure formation. As examples for this setup we study extended seesaw mechanisms with a spontaneously broken global U(1) symmetry, such as the inverse seesaw. The keV-scale pseudo-Goldstone dark matter particle is then naturally produced cold by the decays of the quasi-degenerate right-handed neutrinos., 16 pages plus appendices, 4 figures; corrected discussion of sub-keV dark matter; matches JCAP version
Published: 2018
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8. Comparing timelike geodesics around a Kerr black hole and a boson star

Author: Zakaria Meliani, Frederic H. Vincent, P Grandclément, Eric Gourgoulhon, M. Grould, Laboratoire Univers et Théories (LUTH (UMR_8102)), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA (UMR_8109)), PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Univers et Théories ( LUTH ), Institut national des sciences de l'Univers ( INSU - CNRS ) -Observatoire de Paris-Université Paris Diderot - Paris 7 ( UPD7 ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire d'études spatiales et d'instrumentation en astrophysique ( LESIA ), and Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Institut national des sciences de l'Univers ( INSU - CNRS ) -Observatoire de Paris-Université Paris Diderot - Paris 7 ( UPD7 ) -Centre National de la Recherche Scientifique ( CNRS )
Subjects: Physics and Astronomy (miscellaneous), [ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph], Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, General Relativity and Quantum Cosmology (gr-qc), Astrophysics::Cosmology and Extragalactic Astrophysics, Compact star, 01 natural sciences, General Relativity and Quantum Cosmology, [ PHYS.GRQC ] Physics [physics]/General Relativity and Quantum Cosmology [gr-qc], 0103 physical sciences, Astrophysics::Solar and Stellar Astrophysics, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, Boson, High Energy Astrophysical Phenomena (astro-ph.HE), Physics, Very Large Telescope, Solar mass, 010308 nuclear & particles physics, Galactic Center, Astronomy, Galaxy, Stars, Rotating black hole, [PHYS.GRQC]Physics [physics]/General Relativity and Quantum Cosmology [gr-qc], Astrophysics::Earth and Planetary Astrophysics, Astrophysics - High Energy Astrophysical Phenomena, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Abstract: The second-generation beam combiner at the Very Large Telescope (VLT), GRAVITY, observes the stars orbiting the compact object located at the center of our galaxy, with an unprecedented astrometric accuracy of 10 $\mu$as. The nature of this compact source is still unknown since black holes are not the only candidates explaining the four million solar masses at the Galactic center. Boson stars are such an alternative model to black holes. This paper focuses on the study of trajectories of stars orbiting a boson star and a Kerr black hole. We put in light strong differences between orbits obtained in both metrics when considering stars with sufficiently close pericenters to the compact object, typically $\lesssim 30~M$. Discovery of closer stars to the Galactic center than the S2 star by the GRAVITY instrument would thus be a powerful tool to possibly constrain the nature of the central source., Comment: 30 pages, 20 figures
Published: 2017
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9. Non-Gaussianity in two-field inflation beyond the slow-roll approximation

Author: Gabriel Jung, Bartjan van Tent, Laboratoire de Physique Théorique d'Orsay [Orsay] (LPT), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Théorique d'Orsay [Orsay] ( LPT ), and Université Paris-Sud - Paris 11 ( UP11 ) -Centre National de la Recherche Scientifique ( CNRS )
Subjects: cosmological model, Monomial, Cosmology and Nongalactic Astrophysics (astro-ph.CO), satellite: Planck, [ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph], kinetic, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, power spectrum, Parameter space, Kinetic energy, 01 natural sciences, symbols.namesake, Non-Gaussianity, 0103 physical sciences, Statistical physics, inflation, Planck, 010303 astronomy & astrophysics, non-Gaussianity: primordial, Physics, Slow roll, 010308 nuclear & particles physics, slow-roll approximation, Spectral density, Astronomy and Astrophysics, inflation: model, Expression (mathematics), trajectory, cosmological perturbation theory, symbols, non-gaussianity, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: We use the long-wavelength formalism to investigate the level of bispectral non-Gaussianity produced in two-field inflation models with standard kinetic terms. Even though the Planck satellite has so far not detected any primordial non-Gaussianity, it has tightened the constraints significantly, and it is important to better understand what regions of inflation model space have been ruled out, as well as prepare for the next generation of experiments that might reach the important milestone of Delta f_NL(local) = 1. We derive an alternative formulation of the previously derived integral expression for f_NL, which makes it easier to physically interpret the result and see which types of potentials can produce large non-Gaussianity. We apply this to the case of a sum potential and show that it is very difficult to satisfy simultaneously the conditions for a large f_NL and the observational constraints on the spectral index n_s. In the case of the sum of two monomial potentials and a constant we explicitly show in which small region of parameter space this is possible, and we show how to construct such a model. Finally, the new general expression for f_NL also allows us to prove that for the sum potential the explicit expressions derived within the slow-roll approximation remain valid even when the slow-roll approximation is broken during the turn of the field trajectory (as long as only the epsilon slow-roll parameter remains small)., Comment: 60 pages, 11 figures. v2: Added appendix B on product potentials, minor textual corrections and additions, matches published version
Published: 2017
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10. Testing predictions of the quantum landscape multiverse 2: the exponential inflationary potential

Author: Laura Mersini-Houghton, Eleonora Di Valentino, Institut d'Astrophysique de Paris (IAP), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Institut Lagrange de Paris, Sorbonne Université (SU), Sorbonne Universités, Institut d'Astrophysique de Paris ( IAP ), and Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Institut national des sciences de l'Univers ( INSU - CNRS ) -Centre National de la Recherche Scientifique ( CNRS )
Subjects: High Energy Physics - Theory, entanglement: quantum, Cosmology and Nongalactic Astrophysics (astro-ph.CO), satellite: Planck, [ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph], Physics beyond the Standard Model, media_common.quotation_subject, Cosmic microwave background, Dark matter, Cosmic background radiation, FOS: Physical sciences, anomaly, General Relativity and Quantum Cosmology (gr-qc), cosmic background radiation, 01 natural sciences, General Relativity and Quantum Cosmology, dark matter, [ PHYS.GRQC ] Physics [physics]/General Relativity and Quantum Cosmology [gr-qc], [ PHYS.HTHE ] Physics [physics]/High Energy Physics - Theory [hep-th], multiverse, symbols.namesake, Theoretical physics, 0103 physical sciences, Planck, 010303 astronomy & astrophysics, media_common, Physics, Newtonian potential, new physics, [PHYS.HTHE]Physics [physics]/High Energy Physics - Theory [hep-th], 010308 nuclear & particles physics, Astronomy and Astrophysics, landscape, inflation: model, Universe, High Energy Physics - Theory (hep-th), Dark radiation, [PHYS.GRQC]Physics [physics]/General Relativity and Quantum Cosmology [gr-qc], symbols, perturbation: spectrum, neutrino: relativistic, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: The 2015 Planck data release tightened the region of the allowed inflationary models. Inflationary models with convex potentials have now been ruled out since they produce a large tensor to scalar ratio. Meanwhile the same data offers interesting hints on possible deviations from the standard picture of CMB perturbations. Here we revisit the predictions of the theory of the origin of the universe from the landscape multiverse for the case of exponential inflation, for two reasons: firstly to check the status of the anomalies associated with this theory, in the light of the recent Planck data; secondly, to search for a counterexample whereby new physics modifications may bring convex inflationary potentials, thought to have been ruled out, back into the region of potentials allowed by data. Using the exponential inflation as an example of convex potentials, we find that the answer to both tests is positive: modifications to the perturbation spectrum and to the Newtonian potential of the universe originating from the quantum entanglement, bring the exponential potential, back within the allowed region of current data; and, the series of anomalies previously predicted in this theory, is still in good agreement with current data. Hence our finding for this convex potential comes at the price of allowing for additional thermal relic particles, equivalently dark radiation, in the early universe., Comment: 15 pages
Published: 2017
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11. Muon counting using silicon photomultipliers in the AMIGA detector of the Pierre Auger observatory

Author: Aab, A, Abreu, P, Aglietta, M, Ahn, Ej, Al Samarai, I, Albuquerque, Ifm, Allekotte, I, Allison, P, Almela, A, Castillo, Ja, Alvarez Muniz, J, Batista, Ra, Ambrosio, M, Anchordoqui, L, Andrada, B, Andringa, S, Aramo, C, Arqueros, F, Arsene, N, Asorey, H, Assis, P, Aublin, J, Avila, G, Awal, N, Badescu, Am, Baus, C, Beatty, Jj, Becker, Kh, Bellido, Ja, Berat, C, Bertaina, Me, Bertou, X, Biermann, Pl, Billoir, P, Blaess, Sg, Blanco, A, Blazek, J, Bleve, C, Blumer, H, Bohacova, M, Boncioli, D, Bonifazi, C, Borodai, N, Botti, Am, Brack, J, Brancus, I, Bretz, T, Bridgeman, A, Briechle, Fl, Buchholz, P, Bueno, A, Buitink, S, Buscemi, M, Caballero Mora KS, Caccianiga, B, Caccianiga, L, Cancio, A, Candusso, M, Caramete, L, Caruso, Rossella, Castellina, A, Cataldi, G, Cazon, L, Cester, R, Chavez, Ag, Chiavassa, A, Chinellato, Ja, Diaz, Jcc, Chudoba, J, Clay, Rw, Colalillo, R, Coleman, A, Collica, L, Coluccia, Mr, Conceicao, R, Contreras, F, Cooper, Mj, Coutu, S, Covault, Ce, Cronin, J, Dallier, R, D'Amico, S, Daniel, B, Dasso, S, Daumiller, K, Dawson, Br, de Almeida RM, de Jong SJ, De Mauro, G, Neto, Jrtd, De Mitri, I, de Oliveira, J, de Souza, V, Debatin, J, Deligny, O, Dhital, N, Di Giulio, C, Di Matteo, A, Castro, Mld, Diogo, F, Dobrigkeit, C, Docters, W, D'Olivo, Jc, Dorofeev, A, Dos Anjos RC, Dova, Mt, Dundovic, A, Ebr, J, Engel, R, Erdmann, M, Erfani, M, Escobar, Co, Espadanal, J, Etchegoyen, A, Falcke, H, Fang, K, Farrar, G, Fauth, Ac, Fazzini, N, Ferguson, Ap, Fick, B, Figueira, Jm, Filevich, A, Filipcic, A, Fratu, O, Freire, Mm, Fujii, T, Fuster, A, Gallo, F, Garcia, B, Garcia Pinto, D, Gate, F, Gemmeke, H, Gherghel Lascu, A, Ghia, Pl, Giaccari, U, Giammarchi, M, Giller, M, Glas, D, Glaser, C, Glass, H, Golup, G, Berisso, Mg, Vitale, Pfg, Gonzalez, N, Gookin, B, Gordon, J, Gorgi, A, Gorham, P, Gouffon, P, Griffith, N, Grillo, Af, Grubb, Td, Guarino, F, Guedes, Gp, Hampel, Mr, Hansen, P, Harari, D, Harrison, Ta, Harton, Jl, Hasankiadeh, Q, Haungs, A, Hebbeker, T, Heck, D, Heimann, P, Herve, Ae, Hill, Gc, Hojvat, C, Hollon, N, Holt, E, Homola, P, Horandel, Jr, Horvath, P, Hrabovsky, M, Huege, T, Insolia, Antonio, Isar, Pg, Jandt, I, Jansen, S, Jarne, C, Johnsen, Ja, Josebachuili, M, Kaapa, A, Kambeitz, O, Kampert, Kh, Kasper, P, Katkov, I, Keilhauer, B, Kemp, E, Kieckhafer, Rm, Klages, Ho, Kleifges, M, Kleinfeller, J, Krause, R, Krohm, N, Kuempel, D, Mezek, Gk, Kunka, N, Awad, Ak, Lahurd, D, Latronico, L, Lauscher, M, Lautridou, P, Lebrun, P, de Oliveira MAL, Letessier Selvon, A, Lhenry Yvon, I, Link, K, Lopes, L, Lopez, R, Casado, Al, Lucero, A, Malacari, M, Mallamaci, M, Mandat, D, Mantsch, P, Mariazzi, Ag, Marin, V, Maris, Ic, Marsella, G, Martello, D, Martinez, H, Bravo, Om, Meza, Jjm, Mathes, Hj, Mathys, S, Matthews, J, Matthews, Jaj, Matthiae, G, Maurizio, D, Mayotte, E, Mazur, Po, Medina, C, Medina Tanco, G, Mello, Vbb, Melo, D, Menshikov, A, Messina, S, Micheletti, Mi, Middendorf, L, Minaya, Ia, Miramonti, L, Mitrica, B, Molina Bueno, L, Mollerach, S, Montanet, F, Morello, C, Mostafa, M, Moura, Ca, Muller, G, Muller, Ma, Muller, S, Naranjo, I, Navas, S, Necesal, P, Nellen, L, Nelles, A, Neuser, J, Nguyen, Ph, Niculescu Oglinzanu, M, Niechciol, M, Niemietz, L, Niggemann, T, Nitz, D, Nosek, D, Novotny, V, Nozka, H, Nunez, La, Ochilo, L, Oikonomou, F, Olinto, A, Selmi Dei DP, Palatka, M, Pallotta, J, Papenbreer, P, Parente, G, Parra, A, Paul, T, Pech, M, Pekala, J, Pelayo, R, Pena Rodriguez, J, Pepe, Im, Pereira, Las, Perrone, L, Petermann, E, Peters, C, Petrera, S, Phuntsok, J, Piegaia, R, Pierog, T, Pieroni, P, Pimenta, M, Pirronello, Valerio, Platino, M, Plum, M, Porowski, C, Prado, Rr, Privitera, P, Prouza, M, Quel, Ej, Querchfeld, S, Quinn, S, Rautenberg, J, Ravel, O, Ravignani, D, Reinert, D, Revenu, B, Ridky, J, Risse, M, Ristori, P, Rizi, V, de Carvalho WR, Rojo, Jr, Rogozin, D, Rosado, J, Roth, M, Roulet, E, Rovero, Ac, Saffi, Sj, Saftoiu, A, Salazar, H, Saleh, A, Greus, Fs, Salina, G, Gomez, Jds, Sanchez, F, Sanchez Lucas, P, Santos, Em, Santos, E, Sarazin, F, Sarkar, B, Sarmento, R, Sarmiento Cano, C, Sato, R, Scarso, C, Schauer, M, Scherini, V, Schieler, H, Schmidt, D, Scholten, O, Schoorlemmer, H, Schovanek, P, Schroder, Fg, Schulz, A, Schulz, J, Schumacher, J, Sciutto, Sj, Segreto, A, Settimo, M, Shadkam, A, Shellard, C, Sigl, G, Sima, O, Smialkowski, A, Smida, R, Snow, Gr, Sommers, P, Sonntag, S, Sorokin, J, Squartini, R, Stanca, D, Stanic, S, Stapleton, J, Stasielak, J, Strafella, F, Stutz, A, Suarez, F, Duran, Ms, Sudholz, T, Suomijarvi, T, Supanitsky, Ad, Sutherland, Ms, Swain, J, Szadkowski, Z, Taborda, Oa, Tapia, A, Tepe, A, Theodoro, Vm, Timmermans, C, Peixoto, Cjt, Tomankova, L, Tome, B, Tonachini, A, Elipe, Gt, Machado, Dt, Travnicek, P, Trini, M, Ulrich, R, Unger, M, Urban, M, Galicia, Jfv, Valino, I, Valore, L, van Aar, G, van Bodegom, P, van den Berg AM, van Vliet, A, Varela, E, Cardenas, Bv, Varner, G, Vasquez, R, Vazquez, Jr, Vazquez, Ra, Veberic, D, Verzi, V, Vicha, J, Videla, M, Villasenor, L, Vorobiov, S, Wahlberg, H, Wainberg, O, Walz, D, Watson, Aa, Weber, M, Weindl, A, Wiencke, L, Wilczynski, H, Winchen, T, Wittkowski, D, Wundheiler, B, Wykes, S, Yang, L, Yapici, T, Yelos, D, Yushkov, A, Zas, E, Zavrtanik, D, Zavrtanik, M, Zepeda, A, Zimmermann, B, Ziolkowski, M, Zong, Z, Zuccarello, Francesca, Aab, A., Abreu, P., Aglietta, M., Ahn, E. J., Samarai, I. Al, Albuquerque, I. F. M., Allekotte, I., Allison, P., Almela, A., Castillo, J. Alvarez, Alvarez Muñiz, J., Ambrosio, M., Anastasi, G. A., Anchordoqui, L., Andrada, B., Andringa, S., Aramo, C., Arqueros, F., Arsene, N., Asorey, H., Assis, P., Aublin, J., Avila, G., Badescu, A. M., Balaceanu, A., Baus, C., Beatty, J. J., Becker, K. H., Bellido, J. A., Berat, C., Bertaina, M. E., Bertou, X., Biermann, P. L., Billoir, P., Biteau, J., Blaess, S. G., Blanco, A., Blazek, J., Bleve, Carla, Boháčová, M., Boncioli, D., Bonifazi, C., Borodai, N., Botti, A. M., Brack, J., Brancus, I., Bretz, T., Bridgeman, A., Briechle, F. L., Buchholz, P., Bueno, A., Buitink, S., Buscemi, M., Caballero Mora, K. S., Caccianiga, B., Caccianiga, L., Cancio, A., Canfora, F., Caramete, L., Caruso, R., Castellina, A., Cataldi, G., Cazon, L., Cester, R., Chavez, A. G., Chiavassa, A., Chinellato, J. A., Chudoba, J., Clay, R. W., Colalillo, R., Coleman, A., Collica, L., Coluccia, MARIA RITA, Conceição, R., Contreras, F., Cooper, M. J., Coutu, S., Covault, C. E., Cronin, J., Dallier, R., D'Amico, Stefano, Daniel, B., Dasso, S., Daumiller, K., Dawson, B. R., de Almeida, R. M., de Jong, S. J., Mauro, G. De, Neto, J. R. T. de Mello, DE MITRI, Ivan, de Oliveira, J., de Souza, V., Debatin, J., Peral, L. del, Deligny, O., Giulio, C. Di, Matteo, A. Di, Castro, M. L. Díaz, Diogo, F., Dobrigkeit, C., D'Olivo, J. C., Dorofeev, A., Anjos, R. C. do, Dova, M. T., Dundovic, A., Ebr, J., Engel, R., Erdmann, M., Erfani, M., Escobar, C. O., Espadanal, J., Etchegoyen, A., Falcke, H., Fang, K., Farrar, G., Fauth, A. C., Fazzini, N., Fick, B., Figueira, J. M., Filevich, A., Filipčič, A., Fratu, O., Freire, M. M., Fujii, T., Fuster, A., García, B., Garcia Pinto, D., Gaté, F., Gemmeke, H., Gherghel Lascu, A., Ghia, P. L., Giaccari, U., Giammarchi, M., Giller, M., Głas, D., Glaser, C., Glass, H., Golup, G., Berisso, M. Gómez, Vitale, P. F. Gómez, González, N., Gookin, B., Gordon, J., Gorgi, A., Gorham, P., Gouffon, P., Grillo, A. F., Grubb, T. D., Guarino, F., Guedes, G. P., Hampel, M. R., Hansen, P., Harari, D., Harrison, T. A., Harton, J. L., Hasankiadeh, Q., Haungs, A., Hebbeker, T., Heck, D., Heimann, P., Herve, A. E., Hill, G. C., Hojvat, C., Holt, E., Homola, P., Hörandel, J. R., Horvath, P., Hrabovský, M., Huege, T., Hulsman, J., Insolia, A., Isar, P. G., Jandt, I., Jansen, S., Johnsen, J. A., Josebachuili, M., Kääpä, A., Kambeitz, O., Kampert, K. H., Kasper, P., Katkov, I., Keilhauer, B., Kemp, E., Kieckhafer, R. M., Klages, H. O., Kleifges, M., Kleinfeller, J., Krause, R., Krohm, N., Kuempel, D., Mezek, G. Kukec, Kunka, N., Awad, A. Kuotb, Lahurd, D., Latronico, L., Lauscher, M., Lebrun, P., Legumina, R., de Oliveira, M. A. Leigui, Letessier Selvon, A., Lhenry Yvon, I., Link, K., Lopes, L., López, R., Casado, A. López, Luce, Q., Lucero, A., Malacari, M., Mallamaci, M., Mandat, D., Mantsch, P., Mariazzi, A. G., Mariş, I. C., Marsella, Giovanni, Martello, Daniele, Martinez, H., Bravo, O. Martínez, Meza, J. J. Masía, Mathes, H. J., Mathys, S., Matthews, J., Matthews, J. A. J., Matthiae, G., Mayotte, E., Mazur, P. O., Medina, C., Medina Tanco, G., Melo, D., Menshikov, A., Messina, S., Micheletti, M. I., Middendorf, L., Minaya, I. A., Miramonti, L., Mitrica, B., Mockler, D., Molina Bueno, L., Mollerach, S., Montanet, F., Morello, C., Mostafá, M., Müller, G., Muller, M. A., Müller, S., Naranjo, I., Navas, S., Nellen, L., Neuser, J., Nguyen, P. H., Niculescu Oglinzanu, M., Niechciol, M., Niemietz, L., Niggemann, T., Nitz, D., Nosek, D., Novotny, V., Nožka, H., Núñez, L. A., Ochilo, L., Oikonomou, F., Olinto, A., Selmi Dei, D. Pakk, Palatka, M., Pallotta, J., Papenbreer, P., Parente, G., Parra, A., Paul, T., Pech, M., Pedreira, F., Pȩkala, J., Pelayo, R., Peña Rodriguez, J., Pereira, L. A. S., Perrone, Lorenzo, Peters, C., Petrera, S., Phuntsok, J., Piegaia, R., Pierog, T., Pieroni, P., Pimenta, M., Pirronello, V., Platino, M., Plum, M., Porowski, C., Prado, R. R., Privitera, P., Prouza, M., Quel, E. J., Querchfeld, S., Quinn, S., Ramos Pollant, R., Rautenberg, J., Ravignani, D., Reinert, D., Revenu, B., Ridky, J., Risse, M., Ristori, P., Rizi, V., de Carvalho, W. Rodrigue, Fernandez, G. Rodriguez, Rojo, J. Rodriguez, Rodríguez Frías, M. D., Rogozin, D., Rosado, J., Roth, M., Roulet, E., Rovero, A. C., Saffi, S. J., Saftoiu, A., Salazar, H., Saleh, A., Greus, F. Salesa, Salina, G., Gomez, J. D. Sanabria, Sánchez, F., Sanchez Lucas, P., Santos, E. M., Santos, E., Sarazin, F., Sarkar, B., Sarmento, R., Sarmiento Cano, C., Sato, R., Scarso, C., Schauer, M., Scherini, V., Schieler, H., Schmidt, D., Scholten, O., Schovánek, P., Schröder, F. G., Schulz, A., Schulz, J., Schumacher, J., Sciutto, S. J., Segreto, A., Settimo, M., Shadkam, A., Shellard, R. C., Sigl, G., Silli, G., Sima, O., Śmiałkowski, A., Šmída, R., Snow, G. R., Sommers, P., Sonntag, S., Sorokin, J., Squartini, R., Stanca, D., Stanič, S., Stasielak, J., Strafella, Francesco, Suarez, F., Durán, M. Suarez, Sudholz, T., Suomijärvi, T., Supanitsky, A. D., Sutherland, M. S., Swain, J., Szadkowski, Z., Taborda, O. A., Tapia, A., Tepe, A., Theodoro, V. M., Timmermans, C., Peixoto, C. J. Todero, Tomankova, L., Tomé, B., Tonachini, A., Elipe, G. Torralba, Machado, D. Torre, Torri, M., Travnicek, P., Trini, M., Ulrich, R., Unger, M., Urban, M., Valbuena Delgado, A., Galicia, J. F. Valdé, Valiño, I., Valore, L., Aar, G. van, Bodegom, P. van, Berg, A. M. van den, Vliet, A. van, Varela, E., Cárdenas, B. Varga, Varner, G., Vázquez, J. R., Vázquez, R. A., Veberič, D., Verzi, V., Vicha, J., Villaseñor, L., Vorobiov, S., Wahlberg, H., Wainberg, O., Walz, D., Watson, A. A., Weber, M., Weindl, A., Wiencke, L., Wilczyński, H., Winchen, T., Wittkowski, D., Wundheiler, B., Wykes, S., Yang, L., Yelos, D., Yushkov, A., Zas, E., Zavrtanik, D., Zavrtanik, M., Zepeda, A., Zimmermann, B., Ziolkowski, M., Zong, Z., Zuccarello, F., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE (UMR_7585)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de physique subatomique et des technologies associées (SUBATECH), Université de Nantes - Faculté des Sciences et des Techniques, Université de Nantes (UN)-Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT), Pierre Auger, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Elementary Particle Physics, Physics, Laboratoire de Physique Nucléaire et de Hautes Énergies ( LPNHE ), Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Université Paris Diderot - Paris 7 ( UPD7 ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire de Physique Subatomique et de Cosmologie ( LPSC ), Université Joseph Fourier - Grenoble 1 ( UJF ) -Institut polytechnique de Grenoble - Grenoble Institute of Technology ( Grenoble INP ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique ( CNRS ) -Université Grenoble Alpes ( UGA ), Institut de Physique Nucléaire d'Orsay ( IPNO ), Université Paris-Sud - Paris 11 ( UP11 ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire de physique subatomique et des technologies associées ( SUBATECH ), IMT Atlantique Bretagne-Pays de la Loire ( IMT Atlantique ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Centre National de la Recherche Scientifique ( CNRS ) -Université de Nantes ( UN ), Université de Nantes (UN)-Université de Nantes (UN)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Bleve, C., Colalillo, Roberta, Coluccia, M. R., D'Amico, S., Mitri, I. De, Guarino, Fausto, Marsella, G., Martello, D., Perrone, L., Strafella, F., Valore, Laura, and Research unit Astroparticle Physics
Subjects: Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, [ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph], Astronomy, Performance of High Energy Physics Detector, primary [cosmic radiation], 7. Clean energy, 01 natural sciences, cluster finding, Front-end electronics for detector readout, EMCCDs etc), APDs, [ PHYS.PHYS.PHYS-INS-DET ] Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], visible and IR photons (solid-state), Photon detectors for UV, 010303 astronomy & astrophysics, Instrumentation, Mathematical Physics, Photon detectors for UV, visible and IR photons (solid-state) (PIN diodes, APDs, Si-PMTs, G-APDs, CCDs, EBCCDs, EMCCDs etc), Physics, Performance of high energy physics detectors, EBCCDs, performance [detector], electronics, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Si-PMTs, Instrumentation and Detectors (physics.ins-det), calibration and fitting methods, Pattern recognition, cluster finding, calibration and fitting methods, Performance of High Energy Physics Detectors, Front-end electronics for detector readout, Photon detectors for UV, visible and IR photons (solid-state), Auger, observatory, Pattern recognition, cluster finding, calibration and fitting method, G-APDs, Scintillation counter, ComputingMethodologies_DOCUMENTANDTEXTPROCESSING, upgrade, Electrónica, Física nuclear, Electricidad, Astrophysics - Instrumentation and Methods for Astrophysics, performance, Pattern recognition, cluster finding, calibration and fitting methods, Photomultiplier, Cherenkov counter: water, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Cosmic ray, Silicon photomultiplier, Optics, muon, Pattern recognition, 0103 physical sciences, surface, photomultiplier: silicon, ddc:610, High Energy Physics, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], visible and IR photons (solid-state) (PIN diodes, APDs, Si-PMTs, G-APDs, CCDs, EBCCDs, EMCCDs etc), visible and IR photons (solid-state) (PIN diodes, Instrumentation and Methods for Astrophysics (astro-ph.IM), scintillation counter, Pierre Auger Observatory, Scintillation, 010308 nuclear & particles physics, business.industry, CCDs, showers, calibration, efficiency, Experimental High Energy Physics, RECONHECIMENTO DE PADRÕES, electronics: readout, silicon [photomultiplier], High Energy Physics::Experiment, Amiga, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], business
Abstract: AMIGA (Auger Muons and Infill for the Ground Array) is an upgrade of the Pierre Auger Observatory designed to extend its energy range of detection and to directly measure the muon content of the cosmic ray primary particle showers. The array will be formed by an infill of surface water-Cherenkov detectors associated with buried scintillation counters employed for muon counting. Each counter is composed of three scintillation modules, with a 10 m$^2$ detection area per module. In this paper, a new generation of detectors, replacing the current multi-pixel photomultiplier tube (PMT) with silicon photo sensors (aka. SiPMs), is proposed. The selection of the new device and its front-end electronics is explained. A method to calibrate the counting system that ensures the performance of the detector is detailed. This method has the advantage of being able to be carried out in a remote place such as the one where the detectors are deployed. High efficiency results, i.e. 98 % efficiency for the highest tested overvoltage, combined with a low probability of accidental counting ($\sim$2 %), show a promising performance for this new system., Comment: 24 pages, 12 figures
Published: 2017
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12. Photometric classification of type Ia supernovae in the SuperNova Legacy Survey with supervised learning

Author: V. Ruhlmann-Kleider, C. Lidman, C. Leloup, J. Neveu, Anais Möller, Nathalie Palanque-Delabrouille, Raymond G. Carlberg, Chris Pritchet, Jeffrey A. Rich, Département de Physique des Particules (ex SPP) (DPP), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Département de Physique des Particules (ex SPP) ( DPP ), Institut de Recherches sur les lois Fondamentales de l'Univers ( IRFU ), Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Université Paris-Saclay, Laboratoire de l'Accélérateur Linéaire ( LAL ), Université Paris-Sud - Paris 11 ( UP11 ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Centre National de la Recherche Scientifique ( CNRS ), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), and Département de Physique des Particules (ex SPP) (DPhP)
Subjects: Cosmology and Nongalactic Astrophysics (astro-ph.CO), [ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph], Astrophysics::High Energy Astrophysical Phenomena, Feature extraction, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, Astronomical survey, 01 natural sciences, 0103 physical sciences, Astrophysics::Solar and Stellar Astrophysics, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], [ PHYS.PHYS.PHYS-INS-DET ] Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Instrumentation and Methods for Astrophysics (astro-ph.IM), 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, Physics, 010308 nuclear & particles physics, business.industry, Supervised learning, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy and Astrophysics, Pattern recognition, Random forest, Supernova, Statistical classification, Alternating decision tree, Artificial intelligence, Supernova Legacy Survey, Astrophysics - Instrumentation and Methods for Astrophysics, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], business, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: In the era of large astronomical surveys, photometric classification of supernovae (SNe) has become an important research field due to limited spectroscopic resources for candidate follow-up and classification. In this work, we present a method to photometrically classify type Ia supernovae based on machine learning with redshifts that are derived from the SN light-curves. This method is implemented on real data from the SNLS deferred pipeline, a purely photometric pipeline that identifies SNe Ia at high-redshifts ($0.2, Comment: v2: accepted to JCAP. v1: 27 pages, submitted to JCAP
Published: 2016
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13. Constraining early and interacting dark energy with gravitational wave standard sirens: the potential of the eLISA mission

Author: Chiara Caprini, Nicola Tamanini, Institut de Physique Théorique - UMR CNRS 3681 (IPHT), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Théorique - UMR CNRS 3681 ( IPHT ), and Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Université Paris-Saclay-Centre National de la Recherche Scientifique ( CNRS )
Subjects: noise, cosmological model, Cosmology and Nongalactic Astrophysics (astro-ph.CO), [ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph], interferometer, Dark matter, Cosmic microwave background, Cosmic background radiation, FOS: Physical sciences, General Relativity and Quantum Cosmology (gr-qc), cosmic background radiation, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, 01 natural sciences, General Relativity and Quantum Cosmology, dark matter, [ PHYS.GRQC ] Physics [physics]/General Relativity and Quantum Cosmology [gr-qc], 0103 physical sciences, energy: density, 010306 general physics, Physics, LISA, 010308 nuclear & particles physics, Gravitational wave, gravitational radiation, Astronomy and Astrophysics, redshift, gravitational radiation detector: satellite, dark energy: interaction, Redshift, Black hole, frequency: low, electromagnetic, black hole: binary, dark energy: density, [PHYS.GRQC]Physics [physics]/General Relativity and Quantum Cosmology [gr-qc], Dark energy, energy: exchange, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Noise (radio), Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: We perform a forecast analysis of the capability of the eLISA space-based interferometer to constrain models of early and interacting dark energy using gravitational wave standard sirens. We employ simulated catalogues of standard sirens given by merging massive black hole binaries visible by eLISA, with an electromagnetic counterpart detectable by future telescopes. We consider three-arms mission designs with arm length of 1, 2 and 5 million km, 5 years of mission duration and the best-level low frequency noise as recently tested by the LISA Pathfinder. Standard sirens with eLISA give access to an intermediate range of redshift $1\lesssim z \lesssim 8$, and can therefore provide competitive constraints on models where the onset of the deviation from $\Lambda$CDM (i.e. the epoch when early dark energy starts to be non-negligible, or when the interaction with dark matter begins) occurs relatively late, at $z\lesssim 6$. If instead early or interacting dark energy is relevant already in the pre-recombination era, current cosmological probes (especially the cosmic microwave background) are more efficient than eLISA in constraining these models, except possibly in the interacting dark energy model if the energy exchange is proportional to the energy density of dark energy., Comment: JCAP style, 26 pages, 11 figures, 3 tables; v2: acknowledgements added
Published: 2016
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14. Sky reconstruction for the Tianlai cylinder array

Author: Fengquan Wu, Yichao Li, J.E. Campagne, Xuelei Chen, Christophe Magneville, Shifan Zuo, Jiao Zhang, Reza Ansari, Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire ( LAL ), Université Paris-Sud - Paris 11 ( UP11 ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Centre National de la Recherche Scientifique ( CNRS ), and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)
Subjects: Cosmology and Nongalactic Astrophysics (astro-ph.CO), [ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph], media_common.quotation_subject, FOS: Physical sciences, Astrophysics, Grating, 01 natural sciences, Transfer function, Optics, 0103 physical sciences, Astronomical interferometer, Cylinder, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], 010306 general physics, [ PHYS.PHYS.PHYS-INS-DET ] Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Instrumentation and Methods for Astrophysics (astro-ph.IM), 010303 astronomy & astrophysics, media_common, Physics, business.industry, Spherical harmonics, Astronomy and Astrophysics, Wavelength, Space and Planetary Science, Sky, Astrophysics - Instrumentation and Methods for Astrophysics, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], business, Beam (structure), Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: In this paper, we apply our sky map reconstruction method for transit type interferometers to the Tianlai cylinder array. The method is based on the spherical harmonic decomposition, and can be applied to cylindrical array as well as dish arrays and we can compute the instrument response, synthesised beam, transfer function and the noise power spectrum. We consider cylinder arrays with feed spacing larger than half wavelength, and as expected, we find that the arrays with regular spacing have grating lobes which produce spurious images in the reconstructed maps. We show that this problem can be overcome, using arrays with different feed spacing on each cylinder. We present the reconstructed maps, and study the performance in terms of noise power spectrum, transfer function and beams for both regular and irregular feed spacing configurations., Comment: 15 pages, 12 figures, accepted by RAA
Published: 2016
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15. Heavy spin-2 Dark Matter

Author: Federico R. Urban, Hardi Veermäe, Martti Raidal, Mikael von Strauss, Luca Marzola, Angnis Schmidt-May, Eugeny Babichev, Institut d'Astrophysique de Paris (IAP), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Théorique d'Orsay [Orsay] (LPT), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11), Institut d'Astrophysique de Paris ( IAP ), Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Institut national des sciences de l'Univers ( INSU - CNRS ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire de Physique Théorique d'Orsay [Orsay] ( LPT ), and Université Paris-Sud - Paris 11 ( UP11 ) -Centre National de la Recherche Scientifique ( CNRS )
Subjects: High Energy Physics - Theory, cosmological model, Particle physics, Cosmology and Nongalactic Astrophysics (astro-ph.CO), General relativity, [ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph], Dark matter, Planck mass, FOS: Physical sciences, General Relativity and Quantum Cosmology (gr-qc), 7. Clean energy, 01 natural sciences, General Relativity and Quantum Cosmology, dark matter, Cosmology, [ PHYS.HTHE ] Physics [physics]/High Energy Physics - Theory [hep-th], [ PHYS.GRQC ] Physics [physics]/General Relativity and Quantum Cosmology [gr-qc], Standard Model, Gravitation, High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, bimetric, 010306 general physics, modified gravity, Physics, dark matter theory, [PHYS.HTHE]Physics [physics]/High Energy Physics - Theory [hep-th], 010308 nuclear & particles physics, gravitation: interaction, Graviton, Astronomy and Astrophysics, weak coupling, ghost, Massless particle, High Energy Physics - Phenomenology, High Energy Physics - Theory (hep-th), particle physics - cosmology connection, graviton, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], field theory: massive, [PHYS.GRQC]Physics [physics]/General Relativity and Quantum Cosmology [gr-qc], [ PHYS.HPHE ] Physics [physics]/High Energy Physics - Phenomenology [hep-ph], spin: 2, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: We provide further details on a recent proposal addressing the nature of the dark sectors in cosmology and demonstrate that all current observations related to Dark Matter can be explained by the presence of a heavy spin-2 particle. Massive spin-2 fields and their gravitational interactions are uniquely described by ghost-free bimetric theory, which is a minimal and natural extension of General Relativity. In this setup, the largeness of the physical Planck mass is naturally related to extremely weak couplings of the heavy spin-2 field to baryonic matter and therefore explains the absence of signals in experiments dedicated to Dark Matter searches. It also ensures the phenomenological viability of our model as we confirm by comparing it with cosmological and local tests of gravity. At the same time, the spin-2 field possesses standard gravitational interactions and it decays universally into all Standard Model fields but not into massless gravitons. Matching the measured DM abundance together with the requirement of stability constrains the spin-2 mass to be in the 1 to 100 TeV range., Comment: Latex, 46 pages, 4 figures. Matches published version
Published: 2016
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15. Heavy spin-2 Dark Matter

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