An Improvement on the Negative Sign Problem in Numerical Calculations of a Quantum Spin System
arXiv:cond-mat/9306049 · doi:10.1103/PhysRevB.49.3347
Abstract
We propose new approach to numerical study of quantum spin systems. Our method is based on a fact that one can use any set of states for the path integral as long as it is complete. We apply our method to one-dimensional quantum spin system with next-to-nearest neighbor interactions. We found remarkable improvement in negative sign problem.
11 pages, LaTeX, figures on request, YAMANASHI-93-01
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