Nested Cluster Algorithm for Frustrated Quantum Antiferromagnets

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Simulations of frustrated quantum antiferromagnets suffer from a severe sign problem. We solve the ergodicity problem of the loop-cluster algorithm in a natural way and apply a powerful strategy to address the sign problem. For the spin 1/2 Heisenberg antiferromagnet on a kagome and on a frustrated square lattice, a nested cluster algorithm eliminates the sign problem for large systems. The method is applicable to general lattice geometries but limited to moderate temperatures.
4 pages, 4 figures

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Strongly Correlated Electrons, Soft Condensed Matter, High Energy Physics - Lattice

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http://salesiana.dossiersoluciones.com/handle/123456789/197857

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0803.3538
 http://arxiv.org/abs/0803.3538
 Phys.Rev.Lett.100:247206,2008
 doi:10.1103/PhysRevLett.100.247206

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arXiv