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Quantum phase transition in the two-dimensional XY model with single-ion anisotropy

✍ Scribed by A.S.T. Pires; M.E. Gouvea

Publisher: Elsevier Science
Year: 2009
Tongue: English
Weight: 449 KB
Volume: 388
Category: Article
ISSN: 0378-4371
DOI: 10.1016/j.physa.2008.09.030

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✦ Synopsis

In this paper we study the quantum phase transition and low temperature behavior in a square lattice quantum two-dimensional XY model with single-ion anisotropy and spin S = 1. Starting with the Villain representation, a Landau-Ginzburg expression is written.

The large D phase is studied using the bond operator formalism.

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