Quantum Critical Point of the XY Model and Condensation of Field-Induced Quasiparticles in Dimer Compounds

Preprint

5 October 2004

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/0408649

Abstract

The quantum critical point of the three-dimensional XY model in a symmetry-preserving field is investigated. The results of Monte Carlo simulations with the directed-loop algorithm show that the quantum critical behavior is characterized by the mean-field values of critical exponents. The system-size dependence of various quantities is compared to a simple field-theoretical argument that supports the mean-field scaling.

Keywords

MONTE CARLO SIMULATIONS
QUANTUM CRITICAL POINT
VALUES OF CRITICAL
MEAN FIELD
ALGORITHM
XY MODEL

All Related Versions

Version 1, 2004-08-30, ArXiv
Version 2, 2004-10-05, ArXiv
Published version: Journal of the Physics Society Japan, 73 (12), 3219.

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