Noisy Monte Carlo Algorithm
T. Bakeyev, Ph. de Forcrand
TL;DR
This paper introduces an exact Monte Carlo algorithm that efficiently samples theories with many weak couplings, demonstrated on SU(2) lattice gauge theory, and proposes a new method for dynamical fermion simulations.
Contribution
The paper presents a novel Monte Carlo algorithm that reduces computational effort by ignoring negligible terms, and introduces a new approach for simulating dynamical fermions.
Findings
Efficient sampling of theories with many couplings
Successful simulation of SU(2) lattice gauge theory with a 5-loop improved action
Proposed method for dynamical fermion simulations
Abstract
We present an exact Monte Carlo algorithm designed to sample theories where the energy is a sum of many couplings of decreasing strength. The algorithm avoids the computation of almost all non-leading terms. Its use is illustrated by simulating SU(2) lattice gauge theory with a 5-loop improved action. A new approach for dynamical fermion simulations is proposed.
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