Volume 60, Number 2, October 2002
|Page(s)||316 - 322|
|Section||Condensed matter: electronic structure, electrical, magnetic, and optical properties|
|Published online||01 October 2002|
Temperature chaos in a replica-symmetry-broken spin glass model —A hierarchical model with temperature chaos
Laboratoire de Physique Théorique et Modèles Statistiques, Bât. 100 Université Paris-Sud - F-91405 Orsay, France
2 Service de Physique de l'État Condensé, Orme des Merisiers-CEA Saclay 91191 Gif-sur-Yvette Cedex, France
Accepted: 1 August 2002
Temperature chaos is an extreme sensitivity of the equilibrium state to a change of temperature. It arises in several disordered systems that are described by the so-called scaling theory of spin glasses, while it seems to be absent in mean-field models. We consider a model spin glass on a tree and show that although it has mean-field behavior with replica symmetry breaking, it manifestly has “strong” temperature chaos. We also show why chaos appears only very slowly with system size.
PACS: 75.10.Nr – Spin-glass and other random models
© EDP Sciences, 2002
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