Dynamical replica analysis of disordered Ising spin systems on finitely connected random graphs

Details Dynamical replica analysis of disordered Ising spin systems on finitely connected random graphs Dynamical replica analysis of disordered Ising spin systems on finitely connected random graphs

2005-04-13

arxiv.org/abs/cond-mat/0504313v1

Phys. Rev. Lett. (2005) 95, 117204

Physics

Condensed Matter

Disordered Systems and Neural Networks

4 pages, 14 .eps files

Scientific paper

10.1103/PhysRevLett.95.117204

We study the dynamics of macroscopic observables such as the magnetization and the energy per degree of freedom in Ising spin models on random graphs of finite connectivity, with random bonds and/or heterogeneous degree distributions. To do so we generalize existing implementations of dynamical replica theory and cavity field techniques to systems with strongly disordered and locally tree-like interactions. We illustrate our results via application to the dynamics of e.g. $\pm J$ spin-glasses on random graphs and of the overlap in finite connectivity Sourlas codes. All results are tested against Monte Carlo simulations.

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