Measure of Autocorrelation Times of Local Hybrid Monte Carlo Algorithm for Lattice QCD
P. Marenzoni, L. Pugnetti, P. Rossi
Abstract
We report on a study of the autocorrelation times of the local version of the Hybrid Monte Carlo (LHMC) algorithm for pure gauge SU(3). We compare LHMC to standard multi-hit Metropolis and to the global version of the same HMC. For every algorithm we measure the autocorrelation time for a variety of observables and the string tension as a function of beta. The measurements performed on 84 and 164 lattices indicate that the autocorrelation time of LHMC is significantly shorter than for the other two algorithms.
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