On the entropy of the Viana-Bray model

AUTOR(ES)

Almeida, J.R.L. de

FONTE

Brazilian Journal of Physics

DATA DE PUBLICAÇÃO

2003-12

RESUMO

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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