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31 results on '"Tedesco, Luigi"'

1. Ellipsoidal Universe and Cosmic Shear

Author

Tedesco, Luigi

Subjects
General Relativity and Quantum Cosmology, Astrophysics - Cosmology and Nongalactic Astrophysics, High Energy Physics - Theory
Abstract

We consider a Bianchi I geometry of the Universe. We obtain a cosmic shear expression related with the eccentricity of the Universe. In particular we study the connection among cosmic shear, eccentricity and CMB. The equation are self-contained with only two parameters., Comment: 11 pages, accepted for publication on Universe

Published
2024
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2. Comment on 'A fractal LTB model cannot explain Dark Energy'

Author

Cosmai, Leonardo, Fanizza, Giuseppe, Labini, Francesco Sylos, Pietronero, Luciano, and Tedesco, Luigi

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics, General Relativity and Quantum Cosmology
Abstract

We reply to the criticisms moved in [1] against our results presented in [2]. In particular, we show that our fractal model has none of the problems claimed in [1]. The latters can be addressed to the overlooked nonlinear behaviour of the Einstein's equations., Comment: 3 pages, 1 figure

Published
2023

3. Gravitational Wave luminosity distance in viscous cosmological models

Author

Fanizza, Giuseppe, Pavone, Eliseo, and Tedesco, Luigi

Subjects
General Relativity and Quantum Cosmology, Astrophysics - Cosmology and Nongalactic Astrophysics, High Energy Physics - Theory
Abstract

We study the so-called Gravitational Wave luminosity distance-redshift relation $d_L^{\,GW}(z)$ during cosmological eras driven by non-perfect fluids. In particular, we show that the presence of a shear viscosity in the energy momentum tensor turns out to be the most relevant effect. Within this scenario, a constant shear viscosity imprints the gravitational wave propagation through a friction term $\delta(z)$ with a uniquely given redshift dependence. This peculiar evolution predicts a specific shape for the ratio $d_{L}^{GW}/d_{L}^{EM}$ which tends to a constant value when the sources are at $z\gtrsim 1$, whereas scales linearly with the shear viscosity at lower redshifts, regardless of the value of $\Omega_{m0}$. According to our final discussion, the predicted redshift dependence $\delta(z)$ provided by a shear viscosity could be tested by upcoming surveys of multi-messenger sources against analogous scenarios provided by some widely studied theories of modified gravity., Comment: 19 pages, 4 figures. References and clarifications added. Conclusions unchanged. Accepted for publication in JCAP

Published
2022
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4. Prevalence and predictive role of hypertriglyceridemia in statin-treated patients at very high risk: Insights from the START study

Author

Steering Committee, De Luca (Chairman), L., Gulizia (co-chairman), M.M., Temporelli, P.L., Riccio, C., Colivicchi, F., Amico, A.F., Formigli, D., Geraci, G., Di Lenarda, A., Executive Committee, De Luca, L., Maggioni, A.P., Lucci, D., Coordinating Center, Lorimer, A., Orsini, G., Gonzini, L., Fabbri, G., Priami, P., Maras, P., Ramani, F., Falcone, C., Passarelli, I., Mauri, S., Calabrò, P., Bianchi, R., Di Palma, G., Mascia, F., Vetrano, A., Fusco, A., Proia, E., Aiello, A., Tomai, F., Licitra, R., Petrolini, A., Bosco, B., Magliari, F., Callerame, M., Mazzella, T., Lettica, G.V., Coco, G., Incao, F., Marinacci, L., D'Addario, S., Tartaglione, S.N., Ubaldi, S., Sanchez, F.A., Costa, P., Manca, G., Failla, M., Scherillo, M., Procaccini, V., Senni, M., Luminita, E.M., Bonomo, P., Mossa, C., Corda, S., Colavita, A.R., Trevisonno, G., Vizzari, G., Cosentino, N., Formaro, C., Paolillo, C., Nalin, I.L., De Rosa, F.M., Fontana, F., Fuscaldo, G.F., Passamonti, E., Bertella, E., Calvaruso, E.V., Varani, E., Tani, F., Cicchitelli, G., Gabrielli, D., Paoloni, P., Marziali, A., Campo, G., Tebaldi, M., Biscaglia, S., Biase, M Di, Brunetti, N.D., Gallotta, A.M., Mattei, L., Marini, R., Balsemin, F., Urbano, M.D., Naio, R., Vicinelli, P., Arena, G., Mazzini, M., Gigli, N., Miserrafiti, B., Monopoli, A., Mortara, A., Delfino, P., Chioffi, M.M., Marino, P., Gravellone, M., Barbieri, L., Ledda, A., Carmina, M.G., Raisaro, A.E., Di Giacomo, C., Somaschini, A., Fasano, M.L., Sannazzaro, M., Arcieri, R., Pantaleoni, M., Leuzzi, C., Gorlato, G., Greco, G., Chiera, A., Ammaturo, T.A., Malanchini, G., Del Corral, M.P., Tedesco, L., Pede, S., Urso, L.G., Piscione, F., Galasso, G., Provasoli, S., Fattore, L., Lucca, G., Cresti, A., Cardillo, A., Fera, M.S., Vennettilli, F., Gaudio, C., Paravati, V., Caldarola, P., Locuratolo, N., Verlato, R., De Conti, F., Turiano, G., Preti, G., Moretti, L., Silenzi, S., Colonna, G., Picciolo, A., Nicosia, A., Cascone, C., Di Sciascio, G., Mangiacapra, F., Russo, A., Mastroianno, S., Esposito, G., Cosmi, F., D'Orazio, S., Costantini, C., Lanari, A., De Rosa, P., Esposito, L., Bilato, C., Valle, C Dalla, Ceresa, M., Colombo, E., Pennisi, V., Casciola, G., Driussi, M., Bisceglia, T., Scalvini, S., Rivadossi, F., Volpe, M., Comito, F., Scorzoni, D., Grimoldi, P., Lagioia, R., Santoro, D., De Cesare, N., Comotti, T., Poli, A., Martina, P., Musolino, M.F., Multari, E.I., Bilardo, G., Scalchi, G., Olivieri, C., Caranci, F., Pavan, D., Ganci, G., Mariani, A., Falchetti, E., Lanzillo, T., Caccavale, A., Bongo, A.S., Rizzi, A., Favilli, R., Maffei, S., Mallardo, M., Fulgione, C., Bordin, F., Bonmassari, R., Battaia, E., Puzzo, A., Vianello, G., D'Arpino, A., Romei, M., Pajes, G., Petronzelli, S., Ghezzi, F., Brigido, S., Pignatelli, L., Brscic, E., Sori, P., Russo, M., Biancolillo, E., Ignone, G., De Giorgio, N.A., Campaniello, C., Ponticelli, P., Margonato, A., Gerosa, S., Cutaia, A., Casalicchio, C., Bartolomucci, F., Larosa, C., Spadafina, T., Putignano, A., De Cristofaro, R., Bernardi, L., Sommariva, L., Celestini, A., Bertucci, C.M., Marchetti, M., Grisolia, E Franceschini, Ammendolea, C., Carini, M., Scipione, P., Politano, M., Rubino, G., Reina, C., Peccerillo, N., Paloscia, L., D'Alleva, A., Petacchi, R., Pignalosa, M., Lucchetti, D., Di Palma, F., La Mastra, R.A., Filippis, M De, Fontanella, B., Zanini, G., Casolo, G., Del Meglio, J., Parato, V.M., Genovesi, E., D'Alimonte, A., Miglioranza, A., Alessandri, N., Moscariello, F., Mauro, C., Sasso, A., Caso, P., Petrillo, C., Napoletano, C., Paparoni, S.R., Bernardo, V., Serdoz, R., Rotunno, R., Oppo, I., Aloisio, A., Aurelio, A., Licciardello, G., Cassaniti, L., Gulizia, M.M., Francese, G.M., Marcassa, C., Villani, R., Zorzoli, F., Mileto, F., Vecchis, M De, Scolozzi, D., Lupi, G., Caruso, D., Rebulla, E., La Fata, B., Anselmi, M., Girardi, P., Borruso, E., Ferrantelli, G., Sassone, B., Bressan, S., Capriolo, M., Pelissero, E., Piancastelli, M., Gobbi, M., Cocco, F., Bruno, M.G., Berti, S., Lo Surdo, G., Tanzi, P., De Rosa, R., Vilei, E., De Iaco, M.R., Grassi, G., Zanella, C., Marullo, L., Alfano, G., Pelaggi, P., Talarico, R., Tuccillo, B., Irace, L., Proietti, F., Di Croce, G., Di Lorenzo, L., Zarrilli, A., Bongini, M., Ranise, A., Aprile, A., Fornengo, C., Capogrosso, V., Tranghese, A., Golia, B., Marziano, A., Roncon, L., Picariello, C., Bagni, E., Leci, E., Gregorio, G., Gatto, F., Piemonte, F., Gervasio, F., Navazio, A., Guerri, E., Belmonte, E., Marino, F., Di Belardino, N., Di Nuzzo, M.R., Epifani, M., Comolatti, G., Conconi, B., Benea, D., Casu, G., Merella, P., Ammirati, M.A., Corrado, V.M., Spagnolo, D., Caico, S.I., Bonizzato, S., Margheri, M., Corrado, L., Antonicelli, R., Ferrigno, C., Merlino, A., Nassiacos, D., Antonelli, A., Marchese, A., Uguccioni, M., Villella, A., Bechi, S., Lo Bianco, F., Bedogni, F., Negro, L., Donato, L., Statile, D., Cassin, M., Fedele, F., Granatelli, A., Calcagno, S., Politi, A., Pani, A., De Luca, Leonardo, Temporelli, Pier Luigi, Gulizia, Michele Massimo, Gonzini, Lucio, Ammaturo, Tiziana Anita, Tedesco, Luigi, Pede, Silvia, Oliva, Fabrizio, Gabrielli, Domenico, Colivicchi, Furio, and Averna, Maurizio R.

Published
2023
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5. Constraints on a Bianchi type I spacetime extension of the standard $\Lambda$CDM model

Author

Akarsu, Ozgur, Kumar, Suresh, Sharma, Shivani, and Tedesco, Luigi

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics, General Relativity and Quantum Cosmology
Abstract

We consider the simplest anisotropic generalization, as a correction, to the standard $\Lambda$CDM model, by replacing the spatially flat Robertson-Walker metric by the Bianchi type-I metric, which brings in a new term $\Omega_{\sigma 0}a^{-6}$ (mimicking the stiff fluid) in the average expansion rate $H(a)$ of the Universe. From Hubble and Pantheon data, relevant to the late Universe ($z\lesssim 2.4$), we obtain the constraint $\Omega_{\sigma0}\lesssim10^{-3}$, in line with the model-independent constraints. When the baryonic acoustic oscillations and cosmic microwave background (CMB) data are included, the constraint improves by 12 orders of magnitude, i.e., $\Omega_{\sigma0}\lesssim10^{-15}$. We find that this constraint could alter neither the matter-radiation equality redshift nor the peak of the matter perturbations. Demanding that the expansion anisotropy has no significant effect on the standard big bang nucleosynthesis (BBN), we find the constraint $\Omega_{\sigma0}\lesssim10^{-23}$. We show explicitly that the constraint from BBN renders the expansion anisotropy irrelevant to make a significant change in the CMB quadrupole temperature, whereas the constraint from the cosmological data in our model provides the temperature change up to $\sim11\, \rm mK$, though it is much beyond the CMB quadrupole temperature., Comment: 13 pages, 4 figures, 5 tables; Matches the published version in Physical Review D

Published
2019
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6. Fractal universe and cosmic acceleration in a Lema\^itre-Tolman-Bondi scenario

Author

Cosmai, Leonardo, Fanizza, Giuseppe, Labini, Francesco Sylos, Pietronero, Luciano, and Tedesco, Luigi

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics, General Relativity and Quantum Cosmology
Abstract

In this paper we attempt to answer to the question: can cosmic acceleration of the Universe have a fractal solution? We give an exact solution of a Lema\^itre-Tolman-Bondi (LTB) Universe based on the assumption that such a smooth metric is able to describe, on average, a fractal distribution of matter. While the LTB model has a center, we speculate that, when the fractal dimension is not very different from the space dimension, this metric applies to any point of the fractal structure when chosen as center so that, on average, there is not any special point or direction. We examine the observed magnitude-redshift relation of type Ia supernovae (SNe Ia), showing that the apparent acceleration of the cosmic expansion can be explained as a consequence of the fractal distribution of matter when the corresponding space-time metric is modeled as a smooth LTB one and if the fractal dimension on scales of a few hundreds Mpc is $D=2.9 \pm 0.02$., Comment: 6 pages, 4 figures, accepted for publication in Classical and Quantum Gravity

Published
2018
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7. Ellipsoidal Expansion of the Universe, Cosmic Shear, Acceleration and Jerk Parameter

Author

Tedesco, Luigi

Subjects
General Relativity and Quantum Cosmology, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

In order to study if the anisotropy of the spacetime may induce differences in the cosmic shear or in deceleration parameter we investigate in Bianchi I Universe the most general expression for the cosmic shear and we study the connections between deceleration parameter and cosmic shear. We also consider a shear parametric approach to measure the transition from decelerating to an accelerating Universe. We also study the connection between jerk parameter and ellipsoidal Universe., Comment: 13 pages, accepted for publication in European Physical Journal Plus

Published
2018

8. Fine Structure Constant, Domain Walls, and Generalized Uncertainty Principle in the Universe

Author

Tedesco, Luigi

Subjects
Astrophysics - Cosmology and Extragalactic Astrophysics
Abstract

We study the corrections to the fine-structure constant from the generalized uncertainty principle in the spacetime of a domain wall. We also calculate the corrections to the standard formula to the energy of the electron in the hydrogen atom to the ground state, in the case of spacetime of a domain wall and generalized uncertainty principle. The results generalize the cases known in literature., Comment: 8 pages. Accepted for publication in International Journal of Mathematics and Mathematical Sciences

Published
2011

9. Baryogenesis and CP-Violating Domain Walls in the Background of a Magnetic Field

Author

Campanelli, Leonardo, Cea, Paolo, Fogli, Gian Luigi, and Tedesco, Luigi

Subjects
Astrophysics, General Relativity and Quantum Cosmology, High Energy Physics - Phenomenology, High Energy Physics - Theory
Abstract

Within the domain wall-mediated electroweak baryogenesis, we study fermion scattering off a CP-violating wall in the background of an uniform magnetic field. In particular, we calculate the asymmetry between the reflection coefficients for right-handed and left-handed chiral fermions, \Delta R = R_{R \to L} - R_{L \to R}, which is of relevance to non local baryogenesis mechanisms., Comment: replaced with revised conclusion version, to be published in JCAP

Published
2005
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10. Prevalence and predictive role of hypertriglyceridemia in statin-treated patients at very high risk: insights from the START Study

Author

De Luca, Leonardo, primary, Temporelli, Pier Luigi, additional, Gulizia, Michele Massimo, additional, Gonzini, Lucio, additional, Ammaturo, Tiziana Anita, additional, Tedesco, Luigi, additional, Pede, Silvia, additional, Oliva, Fabrizio, additional, Gabrielli, Domenico, additional, Colivicchi, Furio, additional, Averna, Maurizio R., additional, De Luca, L., additional, Gulizia, M.M., additional, Temporelli, P.L., additional, Riccio, C., additional, Colivicchi, F., additional, Amico, A.F., additional, Formigli, D., additional, Geraci, G., additional, Di Lenarda, A., additional, Maggioni, A.P., additional, Lucci, D., additional, Lorimer, A., additional, Orsini, G., additional, Gonzini, L., additional, Fabbri, G., additional, Priami, P., additional, Maras, P., additional, Ramani, F., additional, Falcone, C., additional, Passarelli, I., additional, Mauri, S., additional, Calabrò, P., additional, Bianchi, R., additional, Di Palma, G., additional, Mascia, F., additional, Vetrano, A., additional, Fusco, A., additional, Proia, E., additional, Aiello, A., additional, Tomai, F., additional, Licitra, R., additional, Petrolini, A., additional, Bosco, B., additional, Magliari, F., additional, Callerame, M., additional, Mazzella, T., additional, Lettica, G.V., additional, Coco, G., additional, Incao, F., additional, Marinacci, L., additional, D'Addario, S., additional, Tartaglione, S.N., additional, Ubaldi, S., additional, Sanchez, F.A., additional, Costa, P., additional, Manca, G., additional, Failla, M., additional, Scherillo, M., additional, Procaccini, V., additional, Senni, M., additional, Luminita, E.M., additional, Bonomo, P., additional, Mossa, C., additional, Corda, S., additional, Colavita, A.R., additional, Trevisonno, G., additional, Vizzari, G., additional, Cosentino, N., additional, Formaro, C., additional, Paolillo, C., additional, Nalin, I.L., additional, De Rosa, F.M., additional, Fontana, F., additional, Fuscaldo, G.F., additional, Passamonti, E., additional, Bertella, E., additional, Calvaruso, E.V., additional, Varani, E., additional, Tani, F., additional, Cicchitelli, G., additional, Gabrielli, D., additional, Paoloni, P., additional, Marziali, A., additional, Campo, G., additional, Tebaldi, M., additional, Biscaglia, S., additional, Biase, M Di, additional, Brunetti, N.D., additional, Gallotta, A.M., additional, Mattei, L., additional, Marini, R., additional, Balsemin, F., additional, Urbano, M.D., additional, Naio, R., additional, Vicinelli, P., additional, Arena, G., additional, Mazzini, M., additional, Gigli, N., additional, Miserrafiti, B., additional, Monopoli, A., additional, Mortara, A., additional, Delfino, P., additional, Chioffi, M.M., additional, Marino, P., additional, Gravellone, M., additional, Barbieri, L., additional, Ledda, A., additional, Carmina, M.G., additional, Raisaro, A.E., additional, Di Giacomo, C., additional, Somaschini, A., additional, Fasano, M.L., additional, Sannazzaro, M., additional, Arcieri, R., additional, Pantaleoni, M., additional, Leuzzi, C., additional, Gorlato, G., additional, Greco, G., additional, Chiera, A., additional, Ammaturo, T.A., additional, Malanchini, G., additional, Del Corral, M.P., additional, Tedesco, L., additional, Pede, S., additional, Urso, L.G., additional, Piscione, F., additional, Galasso, G., additional, Provasoli, S., additional, Fattore, L., additional, Lucca, G., additional, Cresti, A., additional, Cardillo, A., additional, Fera, M.S., additional, Vennettilli, F., additional, Gaudio, C., additional, Paravati, V., additional, Caldarola, P., additional, Locuratolo, N., additional, Verlato, R., additional, De Conti, F., additional, Turiano, G., additional, Preti, G., additional, Moretti, L., additional, Silenzi, S., additional, Colonna, G., additional, Picciolo, A., additional, Nicosia, A., additional, Cascone, C., additional, Di Sciascio, G., additional, Mangiacapra, F., additional, Russo, A., additional, Mastroianno, S., additional, Esposito, G., additional, Cosmi, F., additional, D'Orazio, S., additional, Costantini, C., additional, Lanari, A., additional, De Rosa, P., additional, Esposito, L., additional, Bilato, C., additional, Valle, C Dalla, additional, Ceresa, M., additional, Colombo, E., additional, Pennisi, V., additional, Casciola, G., additional, Driussi, M., additional, Bisceglia, T., additional, Scalvini, S., additional, Rivadossi, F., additional, Volpe, M., additional, Comito, F., additional, Scorzoni, D., additional, Grimoldi, P., additional, Lagioia, R., additional, Santoro, D., additional, De Cesare, N., additional, Comotti, T., additional, Poli, A., additional, Martina, P., additional, Musolino, M.F., additional, Multari, E.I., additional, Bilardo, G., additional, Scalchi, G., additional, Olivieri, C., additional, Caranci, F., additional, Pavan, D., additional, Ganci, G., additional, Mariani, A., additional, Falchetti, E., additional, Lanzillo, T., additional, Caccavale, A., additional, Bongo, A.S., additional, Rizzi, A., additional, Favilli, R., additional, Maffei, S., additional, Mallardo, M., additional, Fulgione, C., additional, Bordin, F., additional, Bonmassari, R., additional, Battaia, E., additional, Puzzo, A., additional, Vianello, G., additional, D'Arpino, A., additional, Romei, M., additional, Pajes, G., additional, Petronzelli, S., additional, Ghezzi, F., additional, Brigido, S., additional, Pignatelli, L., additional, Brscic, E., additional, Sori, P., additional, Russo, M., additional, Biancolillo, E., additional, Ignone, G., additional, De Giorgio, N.A., additional, Campaniello, C., additional, Ponticelli, P., additional, Margonato, A., additional, Gerosa, S., additional, Cutaia, A., additional, Casalicchio, C., additional, Bartolomucci, F., additional, Larosa, C., additional, Spadafina, T., additional, Putignano, A., additional, De Cristofaro, R., additional, Bernardi, L., additional, Sommariva, L., additional, Celestini, A., additional, Bertucci, C.M., additional, Marchetti, M., additional, Grisolia, E Franceschini, additional, Ammendolea, C., additional, Carini, M., additional, Scipione, P., additional, Politano, M., additional, Rubino, G., additional, Reina, C., additional, Peccerillo, N., additional, Paloscia, L., additional, D'Alleva, A., additional, Petacchi, R., additional, Pignalosa, M., additional, Lucchetti, D., additional, Di Palma, F., additional, La Mastra, R.A., additional, Filippis, M De, additional, Fontanella, B., additional, Zanini, G., additional, Casolo, G., additional, Del Meglio, J., additional, Parato, V.M., additional, Genovesi, E., additional, D'Alimonte, A., additional, Miglioranza, A., additional, Alessandri, N., additional, Moscariello, F., additional, Mauro, C., additional, Sasso, A., additional, Caso, P., additional, Petrillo, C., additional, Napoletano, C., additional, Paparoni, S.R., additional, Bernardo, V., additional, Serdoz, R., additional, Rotunno, R., additional, Oppo, I., additional, Aloisio, A., additional, Aurelio, A., additional, Licciardello, G., additional, Cassaniti, L., additional, Francese, G.M., additional, Marcassa, C., additional, Villani, R., additional, Zorzoli, F., additional, Mileto, F., additional, Vecchis, M De, additional, Scolozzi, D., additional, Lupi, G., additional, Caruso, D., additional, Rebulla, E., additional, La Fata, B., additional, Anselmi, M., additional, Girardi, P., additional, Borruso, E., additional, Ferrantelli, G., additional, Sassone, B., additional, Bressan, S., additional, Capriolo, M., additional, Pelissero, E., additional, Piancastelli, M., additional, Gobbi, M., additional, Cocco, F., additional, Bruno, M.G., additional, Berti, S., additional, Lo Surdo, G., additional, Tanzi, P., additional, De Rosa, R., additional, Vilei, E., additional, De Iaco, M.R., additional, Grassi, G., additional, Zanella, C., additional, Marullo, L., additional, Alfano, G., additional, Pelaggi, P., additional, Talarico, R., additional, Tuccillo, B., additional, Irace, L., additional, Proietti, F., additional, Di Croce, G., additional, Di Lorenzo, L., additional, Zarrilli, A., additional, Bongini, M., additional, Ranise, A., additional, Aprile, A., additional, Fornengo, C., additional, Capogrosso, V., additional, Tranghese, A., additional, Golia, B., additional, Marziano, A., additional, Roncon, L., additional, Picariello, C., additional, Bagni, E., additional, Leci, E., additional, Gregorio, G., additional, Gatto, F., additional, Piemonte, F., additional, Gervasio, F., additional, Navazio, A., additional, Guerri, E., additional, Belmonte, E., additional, Marino, F., additional, Di Belardino, N., additional, Di Nuzzo, M.R., additional, Epifani, M., additional, Comolatti, G., additional, Conconi, B., additional, Benea, D., additional, Casu, G., additional, Merella, P., additional, Ammirati, M.A., additional, Corrado, V.M., additional, Spagnolo, D., additional, Caico, S.I., additional, Bonizzato, S., additional, Margheri, M., additional, Corrado, L., additional, Antonicelli, R., additional, Ferrigno, C., additional, Merlino, A., additional, Nassiacos, D., additional, Antonelli, A., additional, Marchese, A., additional, Uguccioni, M., additional, Villella, A., additional, Bechi, S., additional, Lo Bianco, F., additional, Bedogni, F., additional, Negro, L., additional, Donato, L., additional, Statile, D., additional, Cassin, M., additional, Fedele, F., additional, Granatelli, A., additional, Calcagno, S., additional, Politi, A., additional, and Pani., A., additional

Published
2023
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11. Dynamical Generation of the Primordial Magnetic Field by Ferromagnetic Domain Walls

Author

Cea, Paolo and Tedesco, Luigi

Subjects
High Energy Physics - Theory, Astrophysics, General Relativity and Quantum Cosmology, High Energy Physics - Phenomenology
Abstract

The spontaneous generation of uniform magnetic condensate in $QED_3$ gives rise to ferromagnetic domain walls at the electroweak phase transition. These ferromagnetic domain walls are caracterized by vanishing effective surface energy density avoiding, thus, the domain wall problem. Moreover we find that the domain walls generate a magnetic field $B \simeq 10^{24} Gauss$ at the electroweak scale which account for the seed field in the so called dynamo mechanism for the cosmological primordial magnetic field. We find that the annihilation processes of walls with size $R \simeq 10^5 Km$ could release an energy of order $10^{52} erg$ indicating the invisible ferromagnetic walls as possible compact sources of Gamma Ray Bursts., Comment: LaTeX, 8 pages, 1 figure

Published
1998
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12. Spontaneous Generation of Magnetic Field in Three Dimensional QED at Finite Temperature

Author

Cea, Paolo and Tedesco, Luigi

Subjects
High Energy Physics - Theory, High Energy Physics - Phenomenology
Abstract

We investigate the effects of thermal fluctuations on the spontaneous magnetic condensate in three dimensional QED coupled with P-odd Dirac fermions. Our results show that the phenomenon of the spontaneous generation of the constant background magnetic field survives to the thermal corrections even at infinite temperature. We also study the thermal corrections to the fermionic condensate in presence of the magnetic field., Comment: Final version, to appear in Phys. Lett. B

Published
1997
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13. Perturbation Theory with a Variational Basis: the Generalized Gaussian Effective Potential

Author

Cea, Paolo and Tedesco, Luigi

Subjects
High Energy Physics - Theory, High Energy Physics - Phenomenology
Abstract

The perturbation theory with a variational basis is constructed and analyzed.The generalized Gaussian effective potential is introduced and evaluated up to the second order for selfinteracting scalar fields in one and two spatial dimensions. The problem of the renormalization of the mass is discussed in details. Thermal corrections are incorporated. The comparison between the finite temperature generalized Gaussian effective potential and the finite temperature effective potential is critically analyzed. The phenomenon of the restoration at high temperature of the symmetry broken at zero temperature is discussed., Comment: RevTex, 49 pages, 16 eps figures

Published
1996
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14. Generalized Gaussian Effective Potential: Second Order Thermal Corrections

Author

Cea, Paolo and Tedesco, Luigi

Subjects
High Energy Physics - Phenomenology
Abstract

We discuss the finite temperature generalized Gaussian effective potential. We put out a very simple relation between the thermal corrections to the generalizedGaussian effective potential and those of the effective potential. We evaluate explicitly the second order thermal corrections in the case of the selfinteracting scalar field in one spatial dimension., Comment: 13 pages, uuencoded compressed (using GNU's gzip) tar file containing 1 TeX file, 3 Postscript figures

Published
1995
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15. Generalized Gaussian Effective Potential: Thermal Corrections

Author

Cea, Paolo and Tedesco, Luigi

Subjects
High Energy Physics - Phenomenology
Abstract

We evaluate the thermal corrections to the generalized Gaussian effective potential. We carry out the calculations of the lowest order corrections in the case of self-interacting scalar fields in one and two spatial dimensions, and study the restoration of the symmetry at high temperatures., Comment: 11 pages + 3 figures, postscript file

Published
1995

16. The impact of UEFA Euro 2020 football championship on Takotsubo Syndrome: Results of a multicenter national registry

Author

Polimeni, Alberto, primary, Spaccarotella, Carmen, additional, Ielapi, Jessica, additional, Esposito, Giovanni, additional, Ravera, Amelia, additional, Martuscelli, Eugenio, additional, Ciconte, Vincenzo, additional, Menichelli, Maurizio, additional, Varbella, Ferdinando, additional, Imazio, Massimo, additional, Navazio, Alessandro, additional, Sinagra, Gianfranco, additional, Oberhollenzer, Rainer, additional, Sibilio, Gerolamo, additional, Cacciavillani, Luisa, additional, Meloni, Luigi, additional, Dominici, Marcello, additional, Tomai, Fabrizio, additional, Amico, Francesco, additional, Corda, Marco, additional, Musumeci, Giuseppe, additional, Lupi, Alessandro, additional, Zezza, Luigi, additional, De Caterina, Raffaele, additional, Cernetti, Carlo, additional, Metra, Marco, additional, Rossi, Lidia, additional, Calabrò, Paolo, additional, Murrone, Adriano, additional, Volpe, Massimo, additional, Caldarola, Pasquale, additional, Carugo, Stefano, additional, Cortese, Bernardo, additional, Valenti, Renato, additional, Boriani, Giuseppe, additional, Fedele, Francesco, additional, Ventura, Giorgio, additional, Manes, Maria Teresa, additional, Colavita, Angela Rita, additional, Feola, Mauro, additional, Versaci, Francesco, additional, Assennato, Pasquale, additional, Arena, Giuseppe, additional, Ceravolo, Roberto, additional, Amodeo, Vincenzo, additional, Tortorici, Gianfranco, additional, Nassiacos, Daniele, additional, Antonicelli, Roberto, additional, Esposito, Nicolino, additional, Favale, Stefano, additional, Licciardello, Giovanni, additional, Tedesco, Luigi, additional, and Indolfi, Ciro, additional

Published
2022
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20. Acute Lymphoblastic Leukemia: Etiology, Pathogenesis and Treatments

Author

Tedesco, Luigi, Vecchione, Severo, Tedesco, Luigi, and Vecchione, Severo

Subjects
Lymphoblastic leukemia
Abstract

Acute lymphoblastic leukemia (ALL) is a malignant disorder of the bone marrow in which a lymphoid precursor cell becomes genetically altered resulting in dysregulated proliferation and clonal expansion of neoplastic cells. It is the most common malignancy in children, representing nearly one third of all pediatric cancers. In this book, the authors present topical research in the study of acute lymphoblastic leukemia including genome wide association studies in pediatric acute lymphoblastic leukemia; mice deficient for the Slp65 signaling protein which is a model for ALL; histone deacetylase inhibitors and maintenance therapy in Ph negative adult acute lymphoblastic leukemia.

Published
2012

21. Generalized Gaussian Effective Potential: Thermal Corrections

Author

Paolo Cea and Tedesco, Luigi

Subjects
High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), FOS: Physical sciences
Abstract

We evaluate the thermal corrections to the generalized Gaussian effective potential. We carry out the calculations of the lowest order corrections in the case of self-interacting scalar fields in one and two spatial dimensions, and study the restoration of the symmetry at high temperatures., 11 pages + 3 figures, postscript file

Published
1995

30. The impact of UEFA Euro 2020 football championship on Takotsubo Syndrome: Results of a multicenter national registry

Author

Alberto Polimeni, Carmen Spaccarotella, Jessica Ielapi, Giovanni Esposito, Amelia Ravera, Eugenio Martuscelli, Vincenzo Ciconte, Maurizio Menichelli, Ferdinando Varbella, Massimo Imazio, Alessandro Navazio, Gianfranco Sinagra, Rainer Oberhollenzer, Gerolamo Sibilio, Luisa Cacciavillani, Luigi Meloni, Marcello Dominici, Fabrizio Tomai, Francesco Amico, Marco Corda, Giuseppe Musumeci, Alessandro Lupi, Luigi Zezza, Raffaele De Caterina, Carlo Cernetti, Marco Metra, Lidia Rossi, Paolo Calabrò, Adriano Murrone, Massimo Volpe, Pasquale Caldarola, Stefano Carugo, Bernardo Cortese, Renato Valenti, Giuseppe Boriani, Francesco Fedele, Giorgio Ventura, Maria Teresa Manes, Angela Rita Colavita, Mauro Feola, Francesco Versaci, Pasquale Assennato, Giuseppe Arena, Roberto Ceravolo, Vincenzo Amodeo, Gianfranco Tortorici, Daniele Nassiacos, Roberto Antonicelli, Nicolino Esposito, Stefano Favale, Giovanni Licciardello, Luigi Tedesco, Ciro Indolfi, Polimeni, Alberto, Spaccarotella, Carmen, Ielapi, Jessica, Esposito, Giovanni, Ravera, Amelia, Martuscelli, Eugenio, Ciconte, Vincenzo, Menichelli, Maurizio, Varbella, Ferdinando, Imazio, Massimo, Navazio, Alessandro, Sinagra, Gianfranco, Oberhollenzer, Rainer, Sibilio, Gerolamo, Cacciavillani, Luisa, Meloni, Luigi, Dominici, Marcello, Tomai, Fabrizio, Amico, Francesco, Corda, Marco, Musumeci, Giuseppe, Lupi, Alessandro, Zezza, Luigi, De Caterina, Raffaele, Cernetti, Carlo, Metra, Marco, Rossi, Lidia, Calabrò, Paolo, Murrone, Adriano, Volpe, Massimo, Caldarola, Pasquale, Carugo, Stefano, Cortese, Bernardo, Valenti, Renato, Boriani, Giuseppe, Fedele, Francesco, Ventura, Giorgio, Manes, Maria Teresa, Colavita, Angela Rita, Feola, Mauro, Versaci, Francesco, Assennato, Pasquale, Arena, Giuseppe, Ceravolo, Roberto, Amodeo, Vincenzo, Tortorici, Gianfranco, Nassiacos, Daniele, Antonicelli, Roberto, Esposito, Nicolino, Favale, Stefano, Licciardello, Giovanni, Tedesco, Luigi, and Indolfi, Ciro

Subjects
cardiomyopathies, cardiomyopathie, angina pectoris, cardiovascular disease, angina pectori, Settore MED/11 - Malattie dell'Apparato Cardiovascolare, Cardiology and Cardiovascular Medicine, ACS, Takotsubo
Abstract

ObjectivesThe UEFA 2020 European Football Championship held in multiple cities across Europe from June 11 to July 11, 2021, was won by Italy, providing an opportunity to examine the relationship between emotional stress and the incidence of acute cardiovascular events (ACE).Methods and resultsCardiovascular hospitalizations in the Cardiac Care Units of 49 hospital networks in Italy were assessed by emergency physicians during the UEFA Euro 2020 Football Championship. We compared the events that occurred during matches involving Italy with events that occurred during the remaining days of the championship as the control period. ACE was assessed in 1,235 patients. ACE during the UEFA Euro 2020 Football Championship semifinal and final, the most stressful matches ended with penalties and victory of the Italian team, were assessed. A significant increase in the incidence of Takotsubo Syndrome (TTS) by a factor of 11.41 (1.6–495.1, P < 0.003), as compared with the control period, was demonstrated during the semifinal and final, whereas no differences were found in the incidence of ACS [IRR 0.93(0.74–1.18), P = 0.57]. No differences in the incidence of ACS [IRR 0.98 (0.87–1.11; P = 0.80)] or TTS [IRR 1.66(0.80–3.4), P = 0.14] were found in the entire period including all matches of the UEFA Euro 2020 compared to the control period.ConclusionsThe data of this national registry demonstrated an association between the semifinal and final of UEFA Euro 2020 and TTS suggesting that it can be triggered by also positive emotions such as the victory in the European Football Championship finals.

Published
2022

31. Numerical simulation of electroconvection phenomena in electrodialysis

Author

Michele Ciofalo, Mariagiorgia La Cerva, Michele Tedesco, Luigi Gurreri, Andrea Cipollina, Giorgio Micale, and Michele Ciofalo, Mariagiorgia La Cerva, Michele Tedesco, Luigi Gurreri, Andrea Cipollina, Giorgio Micale

Subjects
Settore ING-IND/26 - Teoria Dello Sviluppo Dei Processi Chimici, electroconvection, electrodialysi, overlimiting, electrokinetic instability, Settore ING-IND/19 - Impianti Nucleari
Abstract

In water desalination by electrodialysis, the current density i cannot exceed specific constraints, notably the diffusion limit. Working at higher i (overlimiting current regime) would make higher desalination rates possible. The main phenomenon allowing overlimiting current densities is the electrokinetic instability that arises when a sufficiently intense electric potential gradient is imposed, and leads to electroconvective mixing in the near-wall layer. In this study, these phenomena were investigated by CFD. The governing equations were the Nernst-Planck transport equations for anions and cations, the Poisson equation for the electrical potential and the Navier-Stokes and continuity equations for fluid motion (NPP-NS approach). Time-dependent simulations were conducted both in 2-D and 3-D domains for different imposed potential gradients. Computational stability was obtained only by using very small time steps, typically 10-8~10-7 s. Starting from rest, statistically stationary conditions, characterized by intense vortices a few mm in size, were attained after times of the order of milliseconds. In 3-D simulations, coherent structures reminiscent of Rayleigh-Bénard convection were predicted. Current densities well above the diffusion limit were achieved.

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