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arXiv · 1511.01586

Sign-problem-free Monte Carlo simulation of certain frustrated quantum magnets

Fabien Alet·Kedar Damle·Sumiran Pujari
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Abstract

We introduce a Quantum Monte Carlo (QMC) method which efficiently simulates in a sign-problem-free way a broad class of frustrated $S=1/2$ models with competing antiferromagnetic interactions. Our scheme uses the basis of total spin eigenstates of clusters of spins to avoid the severe sign problem faced by other QMC methods. We also flag important limitations of the new method, and comment on possibilities for further progress.

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Fabien Alet, Kedar Damle, Sumiran Pujari. 2016-08-29. Sign-problem-free Monte Carlo simulation of certain frustrated quantum magnets. https://doi.org/10.1103/physrevlett.117.197203

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