Constrained annealing for spin glasses
Condensed Matter
2009-10-22 v1
Abstract
The quenched free energy of spin glasses is estimated by means of annealed averages where the frustration is constrained to its average value. We discuss the case of d-dimensional Ising models with random nearest neighbour coupling, and we introduce a new method to obtain constrained annealed averages without recurring to Lagrange multipliers. It requires to perform quenched averages either on small volumes in an analytic way, or on finite size strips via products of random transfer matrices. We thus give a sequence of converging lower bounds for the quenched free energy of 2d spin glasses.
Keywords
Cite
@article{arxiv.cond-mat/9412046,
title = {Constrained annealing for spin glasses},
author = {G. Paladin and M. Pasquini and M. Serva},
journal= {arXiv preprint arXiv:cond-mat/9412046},
year = {2009}
}
Comments
plane TeX file,24 pages. 6 figures may be requested to Paladin at vxscaq.aquila.infn.it