TY - GEN A1 - Ilgenfritz, Ernst-Michael A1 - Kerler, Werner A1 - Stüben, Hinnerk T1 - Decorrelation of the topological charge in tempered Hybrid Monte Carlo simulations of QCD N2 - We study the improvement of simulations of QCD with dynamical Wilson fermions by combining the Hybrid Monte Carlo algorithm with parallel tempering. As an indicator for decorrelation we use the topological charge. T3 - ZIB-Report - SC-99-28 KW - QCD KW - parallel tempering KW - topological charge Y1 - 1999 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:0297-zib-4168 ER - TY - GEN A1 - Stüben, Hinnerk T1 - Decorrelation of the Topological Charge in Tempered Simulations of Full QCD N2 - The improvement of simulations of QCD with dynamical Wilson fermions by combining the Hybrid Monte Carlo algorithm with parallel tempering is studied. As an indicator for decorrelation the topological charge is used. T3 - ZIB-Report - SC-99-47 KW - QCD KW - parallel tempering KW - topological charge Y1 - 1999 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:0297-zib-4369 ER - TY - GEN A1 - Ilgenfritz, Ernst-Michael A1 - Kerler, Werner A1 - Müller-Preussker, Michael A1 - Stüben, Hinnerk T1 - Parallel tempering and decorrelation of topological charge in full QCD N2 - The improvement of simulations of QCD with dynamical Wilson fermions by combining the Hybrid Monte Carlo algorithm with parallel tempering is studied on $10^4$ and $12^4$ lattices. As an indicator for decorrelation the topological charge is used. T3 - ZIB-Report - 00-25 KW - QCD KW - parallel tempering KW - topological charge Y1 - 2000 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:0297-zib-5930 ER - TY - GEN A1 - Ilgenfritz, Ernst-Michael A1 - Kerler, Werner A1 - Müller-Preussker, Michael A1 - Stüben, Hinnerk T1 - Parallel tempering in full QCD with Wilson fermions N2 - 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. T3 - ZIB-Report - 01-33 KW - QCD KW - parallel tempering KW - correlation analysis Y1 - 2001 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:0297-zib-6593 ER -