Multigrid Method versus Staging Algorithm for PIMC Simulations

Details Multigrid Method versus Staging Algorithm for PIMC Simulations Multigrid Method versus Staging Algorithm for PIMC Simulations

1996-05-17

arxiv.org/abs/cond-mat/9605108v1

Chem.Phys.Lett. 263 (1996) 488

Physics

Condensed Matter

11 pp. LaTeX, 4 Postscript Figures

Scientific paper

We present a comparison of the performance of two non-local update algorithms for path integral Monte Carlo (PIMC) simulations, the multigrid Monte Carlo method and the staging algorithm. Looking at autocorrelation times for the internal energy we show that both refined algorithms beat the slowing down which is encountered for standard local update schemes in the continuum limit. We investigate the conditions under which the staging algorithm performs optimally and give a brief discussion of the mutual merits of the two algorithms.

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