152200 20251017144606.0 doi 10.1088/1742-5468/2014/05/P05014 sideral 86427 ART-2014-86427 eng Baity-Jesi, M. (orcid)0000-0002-0007-8719 The three-dimensional Ising spin glass in an external magnetic field: The role of the silent majority 2014 Access copy available to the general public Unrestricted We perform equilibrium parallel-tempering simulations of the 3D Ising Edwards–Anderson spin glass in a field, using the Janus computer. A traditional analysis shows no signs of a phase transition. However, we encounter dramatic fluctuations in the behaviour of the model: averages over all the data only describe the behaviour of a small fraction of the data. Therefore, we develop a new approach to study the equilibrium behaviour of the system, by classifying the measurements as a function of a conditioning variate. We propose a finite-size scaling analysis based on the probability distribution function of the conditioning variate, which may accelerate the convergence to the thermodynamic limit. In this way, we find a non-trivial spectrum of behaviours, where some of the measurements behave as the average, while the majority show signs of scale invariance. As a result, we can estimate the temperature interval where the phase transition in a field ought to lie, if it exists. Although this would-be critical regime is unreachable with present resources, the numerical challenge is finally well posed. info:eu-repo/grantAgreement/EC/FP7/247328/EU/Critical Phenomena in Random Systems/CRIPHERASY info:eu-repo/grantAgreement/ES/MICINN/TEC2010-19207 info:eu-repo/grantAgreement/ES/MINECO/FIS2010-16587 info:eu-repo/grantAgreement/ES/MINECO/FIS2012-35719-C02 info:eu-repo/semantics/openAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 2.404 2014 PHYSICS, MATHEMATICAL 4 / 54 = 0.074 2014 Q1 T1 MECHANICS 14 / 136 = 0.103 2014 Q1 T1 info:eu-repo/semantics/article info:eu-repo/semantics/submittedVersion Baños, R. A. Cruz, A. Universidad de Zaragoza (orcid)0000-0002-7934-7271 Fernandez, L. A. Gil-Narvion, J. Universidad de Zaragoza (orcid)0000-0003-2903-3044 Gordillo-Guerrero, A. Iñiguez, D. (orcid)0000-0003-2916-5493 Maiorano, A. Mantovani, F. Marinari, E. Martin-Mayor, V. (orcid)0000-0002-3376-0327 Monforte-Garcia, J. Muñoz Sudupe, A. (orcid)0000-0002-3613-3302 Navarro, D. Universidad de Zaragoza (orcid)0000-0002-0795-8743 Parisi, G. Perez-Gaviro, S. Universidad de Zaragoza (orcid)0000-0001-8425-7345 Pivanti, M. Ricci-Tersenghi, F. Ruiz-Lorenzo, J. Schifano, S. F. Seoane, B. Universidad de Zaragoza (orcid)0000-0002-5967-2827 Tarancon, A. Universidad de Zaragoza (orcid)0000-0003-2772-3762 Tripiccione, R. Yllanes, D. (orcid)0000-0001-7276-2942 5008 785 Universidad de Zaragoza Dpto. Ingeniería Electrón.Com. Área Tecnología Electrónica 5005 555 Universidad de Zaragoza Dpto. Ing.Quím.Tecnol.Med.Amb. Área Ingeniería Química 5008 X Universidad de Zaragoza Dpto. Ingeniería Electrón.Com. Proy. investigación JBA 2004 405 Universidad de Zaragoza Dpto. Física Teórica Área Física Teórica 2014, 5 (2014), P05014 [40 pp.] J. Stat. Mech.-Theory Exp. Journal of Statistical Mechanics: Theory and Experiment 1742-5468 1330337 http://zaguan.unizar.es/record/152200/files/texto_completo.pdf Preprint 1857306 http://zaguan.unizar.es/record/152200/files/texto_completo.jpg?subformat=icon icon Preprint oai:zaguan.unizar.es:152200 articulos driver 2025-10-17-14:15:30 ARTICLE