Journal Title

Physical Review B

Publication Date

8-1-1984

Abstract

We study the quantum critical behavior of the one-dimensional, S = 1 XY model in the presence of a single-ion anisotropy. Using a path-integral approach, we obtain, at T = 0 and for a positive anisotropy constant, a classical free-energy functional that allows discussion of the critical properties. The rescaling of frequencies is governed by the critical exponent z = 1. Renormalization-group arguments reveal that at criticality the system belongs to the same universality class as the isotropic 2-d XY model.

Subjects

Anisotropy; Quantum theory

Publication Information

Copyright 1984 American Physical Society. The original published version of this article may be found at http://dx.doi.org/10.1103/PhysRevB.30.1629.

DOI

10.1103/PhysRevB.30.1629

Peer-Reviewed

Yes

Document Type

Journal Article

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