Low Energy Singlets in the Heisenberg Kagome Antiferromagnet

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dc.creatorBudnik, Ran
dc.creatorAuerbach, Assa
dc.date2004-06-25
dc.date.accessioned2026-07-07T02:58:51Z
dc.date.available2026-07-07T02:58:51Z
dc.descriptionThe spin half Heisenberg antiferromagnet on the Kagome lattice, is mapped by Contractor Renormalization to a Spin-Pseudospin Hamiltonian on the triangular superlattice. Variationally, we find a ground state with columnar dimer order. Dimer orientation fluctuations are described by an effective O(2) model at energies above an exponentially suppressed clock mass scale. Our results explain the large density of low energy singlets observed numerically, and the non magnetic T-squared specific heat observed experimentally.
dc.description5 pages
dc.identifierhttps://arxiv.org/abs/cond-mat/0406651
dc.identifierhttp://arxiv.org/abs/cond-mat/0406651
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/24278
dc.subjectStrongly Correlated Electrons
dc.subjectStatistical Mechanics
dc.titleLow Energy Singlets in the Heisenberg Kagome Antiferromagnet
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