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152. An In-Depth View of the Microscopic Dynamics of Ising Spin Glasses at Fixed Temperature

Author

Janus Collaboration, Belletti, F., Cruz, A., Fernandez, L. A., Gordillo-Guerrero, A., Guidetti, M., Maiorano, A., Mantovani, F., Marinari, E., Martin-Mayor, V., Monforte, J., Sudupe, A. Muñoz, Navarro, D., Parisi, G., Perez-Gaviro, S., Ruiz-Lorenzo, J. J., Schifano, S. F., Sciretti, D., Tarancon, A., Tripiccione, R., and Yllanes, D.

Subjects
Physics, characteristic length scales, nonequilibrium dynamics, spin glasses, Thermoremanent magnetization, Statistical Mechanics (cond-mat.stat-mech), Nonequilibrium dynamics, Estimator, Non-equilibrium thermodynamics, FOS: Physical sciences, Statistical and Nonlinear Physics, Disordered Systems and Neural Networks (cond-mat.dis-nn), Condensed Matter - Disordered Systems and Neural Networks, NO, Coherence length, Critical point (thermodynamics), Spin glasses, Characteristic length scales, Ising spin, Janus, Statistical physics, Mathematical Physics, Condensed Matter - Statistical Mechanics, Coherence (physics)
Abstract

Using the dedicated computer Janus, we follow the nonequilibrium dynamics of the Ising spin glass in three dimensions for eleven orders of magnitude. The use of integral estimators for the coherence and correlation lengths allows us to study dynamic heterogeneities and the presence of a replicon mode and to obtain safe bounds on the Edwards-Anderson order parameter below the critical temperature. We obtain good agreement with experimental determinations of the temperature-dependent decay exponents for the thermoremanent magnetization. This magnitude is observed to scale with the much harder to measure coherence length, a potentially useful result for experimentalists. The exponents for energy relaxation display a linear dependence on temperature and reasonable extrapolations to the critical point. We conclude examining the time growth of the coherence length, with a comparison of critical and activated dynamics., 38 pages, 26 figures

Published
2009

153. Monte Carlo simulations for statistical physics: Janus

Author

Belletti, F., Cotallo, M., Cruz, A., Fernandez, L. A., Gordillo Guerrero, A., Guidetti, M., Maiorano, Andrea, Mantovani, F., Marinari, Vincenzo, Martin Mayor, V., Munoz Sudupe, A., Navarro, D., Parisi, Giorgio, Perez Gaviro, S., Rossi, M., Ruiz Lorenzo, J. J., Saenz Lorenzo, J. F., Schifano, S. F., Sciretti, D., Tarancon, A., Tripiccione, R., Velasco, J. L., Yllanes, D., and Zanier, G.

Published
2009

154. IANUS: Scientific Computing on an FPGA-based Architecture

Author

Belletti, F., Cotallo, M., Cruz, A., Fernández, L. A., Gordillo, A., Maiorano, A., Filippo Mantovani, Marinari, E., Martín-Mayor, V., Muñoz-Sudupe, A., Navarro, D., Pérez-Gaviro, S., Rossi, M., Ruiz-Lorenzo, J. J., Schifano, S. F., Sciretti, D., Tarancón, A., Tripiccione, R., and Velasco, J. L.

Subjects
SPECIAL-PURPOSE COMPUTER, SIMULATIONS, NO
Published
2008

155. Monte Carlo simulations for statistical physics: Janus

Author

Belletti, Francesco, Cotallo, M., Cruz, A., Fernandez, L. A., Gordillo Guerrero, A., Guidetti, Marco, Maiorano, A., Mantovani, Filippo, Marinari, E., Martin Mayor, V., Muñoz Sudupe, A., Navarro, D., Parisi, G., Perez Gaviro, S., Rossi, M., Ruiz Lorenzo, J. J., Saenz Lorenzo, J. F., Schifano, Sebastiano Fabio, Sciretti, D., Tarancon, A., Tripiccione, Raffaele, Velasco, J. L., Yllanes, D., Zanier, G., and The JANUS Collaboration

Subjects
FPGA-based architecture, Spin Glass Monte Carlo Simulations
Published
2008

156. IANUS: an FPGA-based System for High Performance Scientific Computing

Author

Belletti, F., Cotallo, M., Cruz, A., Fernandez, L. A., Gordillo, A., Maiorano, Andrea, Mantovani, F., Marinari, Vincenzo, MARTIN MAYOR, V., MUNOZ SUDUPE, A., Navarro, D., PEREZ GAVIRO, S., Rossi, M., RUIZ LORENZO, J. J., Schifano, S. F., Sciretti, D., Tarancon, A., Tripiccione, R., and Velasco, J. L.

Published
2007

157. The three-dimensional Ising spin glass in an external magnetic field: the role of the silent majority

Author

Baity-Jesi, M, primary, Baños, R A, additional, Cruz, A, additional, Fernandez, L A, additional, Gil-Narvion, J M, additional, Gordillo-Guerrero, A, additional, Iñiguez, D, additional, Maiorano, A, additional, Mantovani, F, additional, Marinari, E, additional, Martin-Mayor, V, additional, Monforte-Garcia, J, additional, Muñoz Sudupe, A, additional, Navarro, D, additional, Parisi, G, additional, Perez-Gaviro, S, additional, Pivanti, M, additional, Ricci-Tersenghi, F, additional, Ruiz-Lorenzo, J J, additional, Schifano, S F, additional, Seoane, B, additional, Tarancon, A, additional, Tripiccione, R, additional, and Yllanes, D, additional

Published
2014
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158. Replica Symmetry Breaking in Short-Range Spin Glasses: Theoretical Foundations and Numerical Evidences

Author

Marinari, E., Parisi, G., Federico Ricci-Tersenghi, Ruiz-Lorenzo, J. J., and Zuliani, F.

Subjects
High Energy Physics - Theory, Statistical Mechanics (cond-mat.stat-mech), High Energy Physics - Theory (hep-th), FOS: Physical sciences, Disordered Systems and Neural Networks (cond-mat.dis-nn), Mathematical Physics (math-ph), Condensed Matter - Disordered Systems and Neural Networks, Adaptation and Self-Organizing Systems (nlin.AO), Condensed Matter::Disordered Systems and Neural Networks, Condensed Matter - Statistical Mechanics, Mathematical Physics, Nonlinear Sciences - Adaptation and Self-Organizing Systems
Abstract

We discuss replica symmetry breaking (RSB) in spin glasses. We update work in this area, from both the analytical and numerical points of view. We give particular attention to the difficulties stressed by Newman and Stein concerning the problem of constructing pure states in spin glass systems. We mainly discuss what happens in finite-dimensional, realistic spin glasses. Together with a detailed review of some of the most important features, facts, data, and phenomena, we present some new theoretical ideas and numerical results. We discuss among others the basic idea of the RSB theory, correlation functions, interfaces, overlaps, pure states, random field, and the dynamical approach. We present new numerical results for the behaviors of coupled replicas and about the numerical verification of sum rules, and we review some of the available numerical results that we consider of larger importance (for example, the determination of the phase transition point, the correlation functions, the window overlaps, and the dynamical behavior of the system)., 48 pages, 21 figures. v2: the published version

Published
2000

159. Comment on 'Evidence for the Droplet/Scaling Picture of Spin Glasses'

Author

Marinari, E., Parisi, G., Ruiz-Lorenzo, J. J., and Zuliani, F.

Subjects
Condensed Matter::Soft Condensed Matter, Statistical Mechanics (cond-mat.stat-mech), FOS: Physical sciences, Condensed Matter::Strongly Correlated Electrons, Disordered Systems and Neural Networks (cond-mat.dis-nn), Condensed Matter - Disordered Systems and Neural Networks, Condensed Matter::Disordered Systems and Neural Networks, Condensed Matter - Statistical Mechanics
Abstract

In a recent letter Moore et al. claim to exhibit evidence for a non-mean-field behavior of the $3d$ Ising spin glass. We show that their claim is insubstantial, and by analyzing in detail the behavior of the Migdal-Kadanoff approximation (MKA) as compared to the behavior of the Edwards-Anderson (EA) spin glass we find further evidence of a mean-field like behavior of the $3d$ spin glass., Comment: 1 page comment including one postscript figure

Published
1999

163. Equilibrium and off-equilibrium simulations of the 4d Gaussian spin glass

Author

Parisi, Giorgio, RICCI TERSENGHI, Federico, and Ruiz Lorenzo, J. J.

Subjects
Condensed Matter (cond-mat), FOS: Physical sciences, Condensed Matter
Abstract

In this paper we study the on and off-equilibrium properties of the four dimensional Gaussian spin glass. In the static case we determine with more precision that in previous simulations both the critical temperature as well as the critical exponents. In the off-equilibrium case we settle the general form of the autocorrelation function, and show that is possible to obtain dynamically, for the first time, a value for the order parameter., Comment: 16 pages and 13 figures, uses epsfig.sty and rotate.sty. Some minor grammatical changes. Also available at http://chimera.roma1.infn.it/index_papers_complex.html

Published
1996
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165. Sample-to-sample fluctuations of the overlap distributions in the three-dimensional Edwards-Anderson spin glass

Author

Baños, R. A., primary, Cruz, A., additional, Fernandez, L. A., additional, Gil-Narvion, J. M., additional, Gordillo-Guerrero, A., additional, Guidetti, M., additional, Iñiguez, D., additional, Maiorano, A., additional, Mantovani, F., additional, Marinari, E., additional, Martin-Mayor, V., additional, Monforte-Garcia, J., additional, Muñoz Sudupe, A., additional, Navarro, D., additional, Parisi, G., additional, Perez-Gaviro, S., additional, Ricci-Tersenghi, F., additional, Ruiz-Lorenzo, J. J., additional, Schifano, S. F., additional, Seoane, B., additional, Tarancón, A., additional, Tripiccione, R., additional, and Yllanes, D., additional

Published
2011
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167. Static versus Dynamic Heterogeneities in theD=3Edwards-Anderson-Ising Spin Glass

Author

Alvarez Baños, R., primary, Cruz, A., additional, Fernandez, L. A., additional, Gil-Narvion, J. M., additional, Gordillo-Guerrero, A., additional, Guidetti, M., additional, Maiorano, A., additional, Mantovani, F., additional, Marinari, E., additional, Martin-Mayor, V., additional, Monforte-Garcia, J., additional, Muñoz Sudupe, A., additional, Navarro, D., additional, Parisi, G., additional, Perez-Gaviro, S., additional, Ruiz-Lorenzo, J. J., additional, Schifano, S. F., additional, Seoane, B., additional, Tarancon, A., additional, Tripiccione, R., additional, and Yllanes, D., additional

Published
2010
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168. Nature of the spin-glass phase at experimental length scales

Author

Alvarez Baños, R, primary, Cruz, A, additional, Fernandez, L A, additional, Gil-Narvion, J M, additional, Gordillo-Guerrero, A, additional, Guidetti, M, additional, Maiorano, A, additional, Mantovani, F, additional, Marinari, E, additional, Martin-Mayor, V, additional, Monforte-Garcia, J, additional, Muñoz Sudupe, A, additional, Navarro, D, additional, Parisi, G, additional, Perez-Gaviro, S, additional, Ruiz-Lorenzo, J J, additional, Schifano, S F, additional, Seoane, B, additional, Tarancon, A, additional, Tripiccione, R, additional, and Yllanes, D, additional

Published
2010
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169. Critical behavior of three-dimensional disordered Potts models with many states

Author

Alvarez Baños, R, primary, Cruz, A, additional, Fernandez, L A, additional, Gordillo-Guerrero, A, additional, Gil-Narvion, J M, additional, Guidetti, M, additional, Maiorano, A, additional, Mantovani, F, additional, Marinari, E, additional, Martin-Mayor, V, additional, Monforte-Garcia, J, additional, Muñoz Sudupe, A, additional, Navarro, D, additional, Parisi, G, additional, Perez-Gaviro, S, additional, Ruiz-Lorenzo, J J, additional, Seoane, B, additional, Schifano, S F, additional, Tarancon, A, additional, Tripiccione, R, additional, and Yllanes, D, additional

Published
2010
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175. Spin glass phase in the four-state three-dimensional Potts model

Author

Cruz, A., primary, Fernandez, L. A., additional, Gordillo-Guerrero, A., additional, Guidetti, M., additional, Maiorano, A., additional, Mantovani, F., additional, Marinari, E., additional, Martin-Mayor, V., additional, Sudupe, A. Muñoz, additional, Navarro, D., additional, Parisi, G., additional, Perez-Gaviro, S., additional, Ruiz-Lorenzo, J. J., additional, Schifano, S. F., additional, Sciretti, D., additional, Tarancon, A., additional, Tripiccione, R., additional, Velasco, J. L., additional, Yllanes, D., additional, and Young, A. P., additional

Published
2009
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177. Nonequilibrium spin glass dynamics with Janus

Author

Belletti, F., primary, Cruz, A., additional, Fernandez, L. A., additional, Gordillo-Guerrero, A., additional, Guidetti, M., additional, Maiorano, A., additional, Mantovani, F., additional, Marinari, E., additional, Martin-Mayor, V., additional, Sudupe, A. Muñoz, additional, Navarro, D., additional, Parisi, G., additional, Perez-Gaviro, S., additional, Ruiz-Lorenzo, J. J., additional, Schifano, S. F., additional, Sciretti, D., additional, Tarancon, A., additional, Tripiccione, R., additional, Yllanes, D., additional, Marro, Joaquín, additional, Garrido, Pedro L., additional, and Hurtado, Pablo I., additional

Published
2009
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178. Nonequilibrium Spin-Glass Dynamics from Picoseconds to a Tenth of a Second

Author

Belletti, F., primary, Cotallo, M., additional, Cruz, A., additional, Fernandez, L. A., additional, Gordillo-Guerrero, A., additional, Guidetti, M., additional, Maiorano, A., additional, Mantovani, F., additional, Marinari, E., additional, Martin-Mayor, V., additional, Sudupe, A. Muñoz, additional, Navarro, D., additional, Parisi, G., additional, Perez-Gaviro, S., additional, Ruiz-Lorenzo, J. J., additional, Schifano, S. F., additional, Sciretti, D., additional, Tarancon, A., additional, Tripiccione, R., additional, Velasco, J. L., additional, and Yllanes, D., additional

Published
2008
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182. First Order Phase Transition in a 3D disordered system

Author

Fernández, L. A., primary, Gordillo-Guerrero, A., additional, Martín-Mayor, V., additional, Ruiz-Lorenzo, J. J., additional, Clemente-Gallardo, Jesús, additional, Bruscolini, Pierpaolo, additional, Castejón, Francisco, additional, Echenique, Pablo, additional, and Sáenz-Lorenzo, José Félix, additional

Published
2008
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189. Finite-size scaling study of the d=4 site-diluted Ising model

Author

Ballesteros, H.G., Fernández Pérez, Luis Antonio, Martín Mayor, Víctor, Muñoz Sudupe, Antonio, Parisi, G., Ruiz-Lorenzo, J. J., Ballesteros, H.G., Fernández Pérez, Luis Antonio, Martín Mayor, Víctor, Muñoz Sudupe, Antonio, Parisi, G., and Ruiz-Lorenzo, J. J.

Abstract

© 1998 Elsevier Science B.V. International Symposium on Lattice Field Theory (Lattice 97) (15th. 1997. Edinburgh, Scothland). Partially supported by CICyT (AEN94-0218, AEN96-1634). JJRL is granted by EC HMC (ERBFMBICT950429). Presented by HGB., We study the four dimensional site-diluted Ising model using finite-size scaling techniques. We explore the whole parameter space (density-coupling) in order to determine the Universality Class of the transition line. Our data are compatible with Mean Field behavior plus logarithmic corrections., CICyT, Spain, EC HMC, Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub

Published
1998

191. A proposal of a Monte Carlo renormalization group transformation

Author

Fernández Pérez, Luis Antonio, Muñoz Sudupe, Antonio, Ruiz Lorenzo, J. J., Tarancón, A., Fernández Pérez, Luis Antonio, Muñoz Sudupe, Antonio, Ruiz Lorenzo, J. J., and Tarancón, A.

Abstract

© 1995 Elsevier Science B.V. International Symposium on Lattice Field Theory (LATTICE 94) (12. 1994. Bielefeld, Germany). We acknowledge CICyT for partial financial support with the projects AEN93-0604, AEN93-0776 and AEN94-218. One of us (JJRL) is granted by MEC (Spain)., We propose a family of renormalization group transformations characterized by free parameters that may be tuned in order to reduce the truncation effects. As a check we test them in the three dimensional XY model. The Schwinger-Dyson equations are used to study the renormalization group flow., CICyT, Spain, MEC, Spain, Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub

Published
1995

192. Polyakov loops and finite-size effects of hadron masses in full lattice QCD

Author

Antonelli, S., Bellacci, M., Fernández Pérez, Luis Antonio, Muñoz Sudupe, Antonio, Ruiz Lorenzo, J. J., Sarno, R., Tarancón, A., Bartoloni, A., Battista, C., Cabibbo, N., Cabasino, S., Panizzi, E., Paolucci, P. S., Todeesco, G. M., Torelli, M., Tripiccione, R., Vicini, P., Antonelli, S., Bellacci, M., Fernández Pérez, Luis Antonio, Muñoz Sudupe, Antonio, Ruiz Lorenzo, J. J., Sarno, R., Tarancón, A., Bartoloni, A., Battista, C., Cabibbo, N., Cabasino, S., Panizzi, E., Paolucci, P. S., Todeesco, G. M., Torelli, M., Tripiccione, R., and Vicini, P.

Abstract

© 1995 Published by Elsevier B.V.We thank G. Parisi for useful suggestions concerning this work and for many discussions and G.C. Rossi for a careful reading of the manuscript. We acknowledge interesting discussions with E. Marinari. We would like to thank F. Marzano, J. Pech, F. Rapuano for encouragements and support. L.A.F., A.M.S., J.J.R.L. and A.T. acknowledge CICyT (Spain) for partial financial support. J.J.R.L. is also supported by a grant of MEC (Spain)., Polyakov type loops are responsible for the difference between quenched and unquenched finite size effects on the QCD mass spectrum. With a numerical simulation, using appropriate sea quark spatial boundary conditions, we show that we can align the phases of spatial Polyakov loops in a predelined direction. Starting from these results, we propose a procedure to minimize fluctuations due to these effects in meson propagators., CICyT (Spain), MEC (Spain), Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub

Published
1995

193. Critical behavior of the three-dimensional Ising spin glass

Author

Ballesteros, H. G., primary, Cruz, A., additional, Fernández, L. A., additional, Martín-Mayor, V., additional, Pech, J., additional, Ruiz-Lorenzo, J. J., additional, Tarancón, A., additional, Téllez, P., additional, Ullod, C. L., additional, and Ungil, C., additional

Published
2000
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195. Proposal of a renormalization group transformation for lattice field theories

Author

Fernández Pérez, Luis Antonio, Muñoz Sudupe, Antonio, Ruiz Lorenzo, J. J., Fernández Pérez, Luis Antonio, Muñoz Sudupe, Antonio, and Ruiz Lorenzo, J. J.

Abstract

© 1994 American Physical Society. We acknowledge CICyT for partial financial support with the projects AEN93-0604, AEN93-0776, and AEN94-218. One of us (J.J.R.L.) thanks the MEC (Spain) for a grant., We propose a new real space renormalization group transformation useful for Monte Carlo calculations in theories with global or local symmetries. From relaxation arguments we de6ne the block-spin transformation with two tunable free parameters, adapted to the system's action. Varying them it is possible to place the Sxed point very close to the simulation point. We show how the method works in a simple model with global symmetry: the three dimensional XY model., CICyT, Spain, MEC, Spain, Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub

Published
1994

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