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A new approach to the study of the ground-state properties of 2D Ising spin glass

Zhi Fang Zhan·Lik Wee Lee·Jian-Sheng Wang
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Abstract

A new approach known as flat histogram method is used to study the +/-J Ising spin glass in two dimensions. Temperature dependence of the energy, the entropy, and other physical quantities can be easily calculated and we give the results for the zero-temperature limit. For the ground-state energy and entropy of an infinite system size, we estimate e0 = -1.4007 +/- 0.0085 and s0 = 0.0709 +/- 0.006, respectively. Both of them agree well with previous calculations. The time to find the ground-states as well as the tunneling times of the algorithm are also reported and compared with other methods.

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Zhi Fang Zhan, Lik Wee Lee, Jian-Sheng Wang. 2000-04-04. A new approach to the study of the ground-state properties of 2D Ising spin glass. https://doi.org/10.1016/s0378-4371(00)00285-5

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