The role of the interaction matrix in mean-field spin glasses

Details The role of the interaction matrix in mean-field spin glasses The role of the interaction matrix in mean-field spin glasses

2002-11-29

arxiv.org/abs/cond-mat/0211695v1

Phys. Rev. E 67, 046112 (2003)

Physics

Condensed Matter

Disordered Systems and Neural Networks

14 pages, 4 figures

Scientific paper

10.1103/PhysRevE.67.046112

Mean-field models of 2-spin Ising spin glasses with interaction matrices taken from ensembles which are invariant under O(N) transformations are studied. A general study shows that the nature of the spin glass transition can be deduced from the eigenvalue spectrum of the interaction matrix. A simple replica approach is derived to carry out the average over the O(N) disorder. The analytic results are confirmed by extensive Monte Carlo simulations for large system sizes and by exact enumeration for small system sizes.

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