The phase diagram of L\'evy spin glasses
Disordered Systems and Neural Networks
2010-01-29 v1
Abstract
We study the L\'evy spin-glass model with the replica and the cavity method. In this model each spin interacts through a finite number of strong bonds and an infinite number of weak bonds. This hybrid behaviour of L\'evy spin glasses becomes transparent in our solution: the local field contains a part propagating along a backbone of strong bonds and a Gaussian noise term due to weak bonds. Our method allows to determine the complete replica symmetric phase diagram, the replica symmetry breaking line and the entropy. The results are compared with simulations and previous calculations using a Gaussian ansatz for the distribution of fields.
Keywords
Cite
@article{arxiv.0910.1231,
title = {The phase diagram of L\'evy spin glasses},
author = {I. Neri and F. L. Metz and D. Bollé},
journal= {arXiv preprint arXiv:0910.1231},
year = {2010}
}
Comments
20 pages, 7 figures