Noisy Monte Carlo revisited
T. Bakeyev, Ph. de Forcrand
TL;DR
This paper introduces an exact Monte Carlo algorithm that efficiently samples theories with many couplings, demonstrated on SU(2) lattice gauge theory, with potential applications to full QCD.
Contribution
It presents a simplified, exact Monte Carlo method that reduces computational effort by ignoring non-leading terms in theories with many weak couplings.
Findings
Successfully simulated SU(2) lattice gauge theory with a 5-loop action
Algorithm avoids computation of almost all non-leading terms
Potential applicability to full QCD
Abstract
We present an exact Monte Carlo algorithm designed to sample theories where the energy is a sum of many couplings of decreasing strength. Our algorithm, simplified from that of L. Lin et al. hep-lat/9905033, avoids the computation of almost all non-leading terms. We illustrate its use by simulating SU(2) lattice gauge theory with a 5-loop action, and discuss further applications to full QCD.
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