The XY model has long-range order for all spins and all dimensions greater than one

Kennedy, Tom ; Lieb, Elliott H. ; Sriram Shastry, B. (1988) The XY model has long-range order for all spins and all dimensions greater than one Physical Review Letters, 61 (22). pp. 2582-2584. ISSN 0031-9007

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Official URL: http://prl.aps.org/abstract/PRL/v61/i22/p2582_1

Related URL: http://dx.doi.org/10.1103/PhysRevLett.61.2582

Abstract

The quantum XY model of interacting spins on a hypercubic lattice has long-range order in the ground state for all values of the spin and all dimensions greater than one. We also show that in the limit of high dimension the spontaneous magnetization converges to the spontaneous magnetization of the Néel state.

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Source:Copyright of this article belongs to The American Physical Society.
ID Code:50834
Deposited On:27 Jul 2011 13:14
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