Metastable States in Spin Glasses and Disordered Ferromagnets

C. M. Newman; D. L. Stein

doi:10.1103/physreve.60.5244

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arXiv · cond-mat/9908455

Metastable States in Spin Glasses and Disordered Ferromagnets

C. M. Newman·D. L. Stein

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Abstract

We study analytically M-spin-flip stable states in disordered short-ranged Ising models (spin glasses and ferromagnets) in all dimensions and for all M. Our approach is primarily dynamical and is based on the convergence of a zero-temperature dynamical process with flips of lattice animals up to size M and starting from a deep quench, to a metastable limit. The results (rigorous and nonrigorous, in infinite and finite volumes) concern many aspects of metastable states: their numbers, basins of attraction, energy densities, overlaps, remanent magnetizations and relations to thermodynamic states. For example, we show that their overlap distribution is a delta-function at zero. We also define a dynamics for M=infinity, which provides a potential tool for investigating ground state structure.

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C. M. Newman, D. L. Stein. 1999-08-30. Metastable States in Spin Glasses and Disordered Ferromagnets. https://doi.org/10.1103/physreve.60.5244

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