Correlation functions in SU(2) invariant RVB spin liquids on non-bipartite lattices

Details Correlation functions in SU(2) invariant RVB spin liquids on non-bipartite lattices Correlation functions in SU(2) invariant RVB spin liquids on non-bipartite lattices

2012-03-29

arxiv.org/abs/1203.6621v1

Physics

Condensed Matter

Strongly Correlated Electrons

4.5 pages, 6 figures

Scientific paper

We introduce a Monte Carlo scheme based on sampling of Pfaffians to investigate Anderson's resonating-valence-bond (RVB) spin liquid wave function on the kagome and the triangular lattice. This eliminates a sign problem that prevents utilization of the valence bond basis in Monte Carlo studies for non-bipartite lattices. Studying lattice sizes of up to 600 sites, we calculate singlet-singlet and spin-spin correlations, and demonstrate how the lattice symmetry is restored within each topological sector as the system size is increased. Our findings are consistent with the expectation that the nearest neighbor RVB states describe a topological spin liquid on these non-bipartite lattices.

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