RT Journal Article
T1 Soft Modes, Localization, and Two-Level Systems in Spin Glasses
A1 Baity Jesi, Marco
A1 Martín Mayor, Víctor
A1 Parisi, G.
A1 Pérez Gaviro, S.
AB In the three-dimensional Heisenberg spin glass in a random field, we study the properties of the inherent structures that are obtained by an instantaneous cooling from infinite temperature. For a not too large field the density of states g(ω) develops localized soft plastic modes and reaches zero as ω^4 (for large fields a gap appears). When we perturb the system adding a force along the softest mode, one reaches very similar minima of the energy, separated by small barriers, that appear to be good candidates for classical two-level systems.
PB American Physical Society
SN 0031-9007
YR 2015
FD 2015-12-23
LK https://hdl.handle.net/20.500.14352/24341
UL https://hdl.handle.net/20.500.14352/24341
LA eng
NO © 2015 American Physical Society (APS).We were supported by the European Research Council under the European Unions Seventh Framework Programme (FP7/2007-2013, ERC Grant Agreement No. 247328). We were partially supported by MINECO, Spain, through the research contract No. FIS2012-35719-C02. This work was partially supported by the GDRE 224 CNRS-INdAM GREFI-MEFI. M. B.-J. was supported by the FPU program (Ministerio de Educación, Spain). The authors thankfully acknowledge the resources from the supercomputer “Memento,” and the technical expertise and assistance provided by BIFI-ZCAM (Universidad de Zaragoza).
NO Unión Europea. FP7
NO Ministerio de Economía y Competitividad (MINECO)
NO Istituto Nazionale di Alta Matematica "F. Severi" (INdAM), Italia
NO Centre national de la recherche scientifique (CNRS), Francia
NO GREFI-MEFI (Gruppo di Ricerca Europeo Franco-Italiano: Fisica e Matematica)
NO Programa de Formación de Profesorado Universitario (FPU), MEC
NO Ministerio de Educación y Ciencia (MEC), España
DS Docta Complutense
RD 18 abr 2025