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arxiv: cond-mat/9811025 · v2 · submitted 1998-11-02 · ❄️ cond-mat · hep-lat

Monte Carlo Quasi-Heatbath by approximate inversion

classification ❄️ cond-mat hep-lat
keywords distributionlinearsolvingsystemaccuracyapproximatearbitrarilycarlo
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When sampling the distribution P(phi) ~ exp(-|A phi|^2), a global heatbath normally proceeds by solving the linear system A phi = eta, where eta is a normal Gaussian vector, exactly. This paper shows how to preserve the distribution P(phi) while solving the linear system with arbitrarily low accuracy. Generalizations are presented.

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