Projection Method for Exact Diagonalization in the Strong Coupling Limit for Frustrated Models with Highly Degenerate Ground States
arXiv:0806.2197 · doi:10.1143/JPSJ.77.085002
Abstract
In this paper, we carry out a new technique named projection ED and indicate that it is applicable to the frustrated models, e.g., XXZ spin-1/2 Heisenberg and spinless fermion t-V models, in the strong coupling limit with highly degenerate ground states in a general way. As an example, we deal with a spinless fermion t-V model on a triangular lattice and show the usefulness of the method.
2 pages, 3 figures, to be published in Journal of the Physical Society of Japan (JPSJ) Vol.77 No.8
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