The long-range ordering in a quantum lattice gas

B.V. Bondarev

Physica A: Statistical Mechanics and its Applications, 1994, vol. 209, issue 3, 477-485

Abstract: The mean-field-like theory of the equilibrium state of an ordered quantum lattice gas is developed within the framework of the density matrix formalism. This theory is the generalization of the Gorsky-Bragg-Williams theory of atomic ordering in binary alloys. The density matrix is determined to describe the ordered state of a system of identical particles performing random walks on the sites of a cubic lattice. The temperature dependence of the long-range order parameter and other characteristics of the phase transition are established.

Date: 1994
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:209:y:1994:i:3:p:477-485

DOI: 10.1016/0378-4371(94)90198-8

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