Entropy and free energy of the spin glass in the random-bond ising model on the square lattice at finite temperatures

Nahomi Miyamoto and Shigetoshi Katsura

Physica A: Statistical Mechanics and its Applications, 1982, vol. 111, issue 1, 1-16

Abstract: The free energy, the energy, and the entropy of the random-Ising mixture with the ferro- and antiferromagnetic bonds, of which the concentrations are 12, are investigated by the cluster variational method in the pair approximation and that in the square approximation. At T = 0, they reproduce the values of these quantities in the previous papers.

Date: 1982
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:111:y:1982:i:1:p:1-16

DOI: 10.1016/0378-4371(82)90080-2

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