Semiclassical ordering in the large-N pyrochlore antiferromagnet

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dc.creatorHizi, U.
dc.creatorSharma, Prashant
dc.creatorHenley, C. L.
dc.date2005-06-22
dc.date2005-10-12
dc.date.accessioned2026-07-07T06:38:01Z
dc.date.available2026-07-07T06:38:01Z
dc.descriptionWe study the semiclassical limit of the $Sp(N)$ generalization of the pyrochlore lattice Heisenberg antiferromagnet by expanding about the $N \to \infty$ saddlepoint in powers of a generalized inverse spin. To leading order, we write down an effective Hamiltonian as a series in loops on the lattice. Using this as a formula for calculating the energy of any classical ground state, we perform Monte-Carlo simulations and find a unique collinear ground state. This state is not a ground state of linear spin-wave theory, and can therefore not be a physical (N=1) semiclassical ground state.
dc.description4 pages, 4 eps figures; published version
dc.identifierhttps://arxiv.org/abs/cond-mat/0506574
dc.identifierhttp://arxiv.org/abs/cond-mat/0506574
dc.identifierPhys. Rev. Lett. 95, 167203 (2005)
dc.identifierdoi:10.1103/PhysRevLett.95.167203
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/100593
dc.subjectStrongly Correlated Electrons
dc.titleSemiclassical ordering in the large-N pyrochlore antiferromagnet
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