EntityQ469596· pop 9· linked from 29 articlesClassical XY modelSign in to savelattice model of statistical mechanicsConnectionsKosterlitz–Thouless transitionEntityBoltzmann distributionEntityheliumEntityInternational Standard Book NumberEntitydigital object identifierEntityInternational Standard Serial NumberEntityTaylor seriesEntityrandom variableEntitystatistical mechanicsEntityphase changeEntitybibcodeEntityQ118398EntityMonte Carlo methodEntityunit vectorEntitymagnetic susceptibilityEntityBessel functionEntityQ22908627EntityHelmholtz free energyEntityground stateEntitythermodynamic free energyEntityCategoriesLattice models