Parallel tempering in full QCD with Wilson fermions

Please always quote using this URN: urn:nbn:de:0297-zib-6593
  • 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.

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Metadaten
Author:Ernst-Michael Ilgenfritz, Werner Kerler, Michael Müller-Preussker, Hinnerk Stüben
Document Type:ZIB-Report
Tag:QCD; correlation analysis; parallel tempering
PACS-Classification:10.00.00 THE PHYSICS OF ELEMENTARY PARTICLES AND FIELDS (for experimental methods and instrumentation for elementary-particle physics, see section 29) / 11.00.00 General theory of fields and particles (see also 03.65.-w Quantum mechanics and 03.70.+k Theory of quantized fields) / 11.15.-q Gauge field theories / 11.15.Ha Lattice gauge theory (see also 12.38.Gc Lattice QCD calculations)
10.00.00 THE PHYSICS OF ELEMENTARY PARTICLES AND FIELDS (for experimental methods and instrumentation for elementary-particle physics, see section 29) / 12.00.00 Specific theories and interaction models; particle systematics / 12.38.-t Quantum chromodynamics; Quarks, gluons, and QCD in nuclear reactions, see 24.85.+p / 12.38.Gc Lattice QCD calculations (see also 11.15.Ha Lattice gauge theory)
Date of first Publication:2001/11/16
Series (Serial Number):ZIB-Report (01-33)
Published in:Appeared in: Phys. Rev. D 65 (2002) 094506