2026-04-18T04:00:36Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/109202025-12-04T20:46:47Zcom_2072_1057col_2072_478822col_2072_478917

Order-parameter fluctuations in Ising spin glasses at low temperatures Palassini, Matteo Sales i Pardo, Marta Ritort Farran, Fèlix Vidres de spin Temperatures baixes Propietats magnètiques Spin glasses Low temperatures Magnetic properties We present a numerical study of the order-parameter fluctuations for Ising spin glasses in three and four dimensions at very low temperatures and without an external field. Accurate measurements of two previously introduced parameters, A and G, show that the order parameter is not self-averaging, consistent with a zero-temperature thermal exponent value \theta' \simeq 0, and confirm the validity of the relation G=1/3 in the thermodynamic limit in the whole low-temperature phase, as predicted by stochastic stability arguments. 2010-01-26T08:56:32Z 2010-01-26T08:56:32Z 2003 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevB.68.224430 Physical Review B, 2003, vol. 68, núm. 22, p. 224430-1-224430-6 http://doi.org/10.1103/PhysRevB.68.224430 (c) The American Physical Society, 2003 info:eu-repo/semantics/openAccess The American Physical Society Articles publicats en revistes (Física de la Matèria Condensada)