Replica symmetry breaking in the `small world' spin glass

Details Replica symmetry breaking in the `small world' spin glass Replica symmetry breaking in the `small world' spin glass

2004-05-24

arxiv.org/abs/cond-mat/0405563v1

Physics

Condensed Matter

Disordered Systems and Neural Networks

21 pages, 3 figures

Scientific paper

We apply the cavity method to a spin glass model on a `small world' lattice, a random bond graph super-imposed upon a 1-dimensional ferromagnetic ring. We show the correspondence with a replicated transfer matrix approach, up to the level of one step replica symmetry breaking (1RSB). Using the scheme developed by M\'ezard & Parisi for the Bethe lattice, we evaluate observables for a model with fixed connectivity and $\pm J$ long range bonds. Our results agree with numerical simulations significantly better than the replica symmetric (RS) theory.

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