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Quantum Monte-Carlo method without negative-sign problem for two-dimensional electron systems under strong magnetic fields

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Type
Preprint
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DOI: 10.1143/JPSJ.73.1103
arXiv ID: cond-mat/0401446
Source
arXiv
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Abstract

The quantum Monte-Carlo method is applied to two-dimensional electron systems under strong magnetic fields. The negative-sign problem involved by this method can be avoided for certain filling factors by modifying interaction parameters from those of the Coulomb interaction. Our techniques for obtaining sign-problem-free parameters are described in detail. Calculated results on static observables are also reported for Landau level filling $\nu = 1/3$.

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