Quantum Critical Point of theXYModel and Condensation of Field-induced Quasiparticles in Dimer Compounds
- 15 December 2004
- journal article
- Published by Physical Society of Japan in Journal of the Physics Society Japan
- Vol. 73 (12) , 3219-3222
- https://doi.org/10.1143/jpsj.73.3219
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 scalingKeywords
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