Critical exponents of the quantum phase transition in a planar antiferromagnet

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dc.creatorTroyer, Matthias
dc.creatorImada, Masatoshi
dc.creatorUeda, Kazuo
dc.date1997-02-10
dc.date1997-02-12
dc.date.accessioned2026-07-07T09:02:38Z
dc.date.available2026-07-07T09:02:38Z
dc.descriptionWe have performed a large scale quantum Monte Carlo study of the quantum phase transition in a planar spin-1/2 Heisenberg antiferromagnet with CaV4O9 structure. We obtain a dynamical exponent z=1.018+/-0.02. The critical exponents beta, nu and eta agree within our errors with the classical 3D O(3) exponents, expected from a mapping to the nonlinear sigma model. This confirms the conjecture of Chubukov, Sachdev and Ye [Phys. Rev. B 49, 11919 (1994)] that the Berry phase terms in the planar Heisenberg antiferromagnet are dangerously irrelevant.
dc.description5 pages including 4 figures; revised version: some minor changes and added references
dc.identifierhttps://arxiv.org/abs/cond-mat/9702077
dc.identifierhttp://arxiv.org/abs/cond-mat/9702077
dc.identifierJ.Phys.Soc.Jap. 66 (1997) 2957-2960
dc.identifierdoi:10.1143/JPSJ.66.2957
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/148698
dc.subjectStrongly Correlated Electrons
dc.subjectStatistical Mechanics
dc.subjectSuperconductivity
dc.subjectHigh Energy Physics - Lattice
dc.titleCritical exponents of the quantum phase transition in a planar antiferromagnet
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