On the entropy of the Viana-Bray model

Details On the entropy of the Viana-Bray model On the entropy of the Viana-Bray model

2002-08-27

arxiv.org/abs/cond-mat/0208534v1

Physics

Condensed Matter

Disordered Systems and Neural Networks

6 pages, no figures

Scientific paper

The entropy of the Viana-Bray model at zero temperature and external field is calculated within the solution which takes into account only delta functions for the global order parameter P(h). It is shown that such solution is unsatisfactory both from the viewpoint of stability analysis and for not reproducing the well known Sherrington-Kirkpatrick result in the large connectivity limit thus pointing out the relevance of considering solutions with continuous part in P(h) for such model and possibly related models.

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