Exact bounds on the critical frustration in the Shastry-Sutherland Model

Details Exact bounds on the critical frustration in the Shastry-Sutherland Model Exact bounds on the critical frustration in the Shastry-Sutherland Model

2001-04-20

arxiv.org/abs/cond-mat/0104385v1

Physics

Condensed Matter

Statistical Mechanics

13 pages, 8 figures

Scientific paper

We discuss the phase diagram of the Shastry-Sutherland model for arbitrary
spin S and derive rigorous lower and upper bounds on the phase boundaries of
the dimer phase by using various versions of a variational ansatz in
combination with the exact diagonalisation method.

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