Volume 60, Number 5, December 2002
|Page(s)||775 - 781|
|Section||Condensed matter: electronic structure, electrical, magnetic, and optical properties|
|Published online||01 November 2002|
Overlap among states at different temperatures in the SK model
Service de physique théorique,
CEA Saclay - 91191 Gif-sur-Yvette, France
2 Dipartimento di Fisica, SMC and UdR1 of INFM and INFN Università di Roma La Sapienza - P. A. Moro 2, 00185 Roma, Italy
Accepted: 23 September 2002
We discuss the issue of temperature chaos in the Sherrington-Kirkpatrick spin glass mean-field model. We numerically compute probability distributions of the overlap among (equilibrium) configurations at two different values of the temperature, both in the spin glass phase. The situation on our medium-size systems is clearly non-chaotic, but a weak form of chaos could be emerging on very large lattices.
PACS: 75.50.Lk – Spin glasses and other random magnets / 75.10.Nr – Spin-glass and other random models / 75.40.Gb – Dynamic properties (dynamic susceptibility, spin waves, spin diffusion, dynamic scaling, etc.)
© EDP Sciences, 2002
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