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

2001/04/20 by Ute Löw, Löw, Ute, Erwin Müller-Hartmann +1
Physics and Astronomy · #FOS: Physical sciences #Statistical Mechanics (cond-mat.stat-mech) #cond-mat.stat-mech

paper · pdf · doi:10.48550/arxiv.cond-mat/0104385

13 pages, 8 figures

arxiv created 2001/04/20 · arxiv updated 2009/11/30

Abstract

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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