Document Type

Article

Date

11-20-2007

Language

English

Disciplines

Physics

Description/Abstract

As spin glass materials have extremely slow dynamics, devious numerical methods are needed to study low-temperature states. A simple and fast optimization version of the classical Kasteleyn treatment of the Ising model is described and applied to two-dimensional Ising spin glasses. The algorithm combines the Pfaffian and matching approaches to directly strip droplet excitations from an excited state. Extended ground states in Ising spin glasses on a torus, which are optimized over all boundary conditions, are used to compute precise values for ground state energy densities.

Additional Information

4 pages, 2 figures; minor clarifications More information at http://arxiv.org/abs/0706.2866

Source

Harvested from Arxiv.org

Creative Commons License


This work is licensed under a Creative Commons Attribution 3.0 License.

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Physics Commons

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