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Parallel tempering in full QCD with Wilson fermions (2001)

Ilgenfritz, Ernst-Michael ; Kerler, Werner ; Müller-Preussker, Michael ; [et al.]

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Publication Date: 2014-02-26

Description: We study the performance of QCD simulations with dynamical Wilson fermions by combining the Hybrid Monte Carlo algorithm with parallel tempering on $10^4$ and $12^4$ lattices. In order to compare tempered with standard simulations, covariance matrices between sub-ensembles have to be formulated and evaluated using the general properties of autocorrelations of the parallel tempering algorithm. We find that rendering the hopping parameter $\kappa$ dynamical does not lead to an essential improvement. We point out possible reasons for this observation and discuss more suitable ways of applying parallel tempering to QCD.

Keywords: ddc:000

Language: English

Type: reportzib , doc-type:preprint

Format: application/postscript

Format: application/pdf

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