Implementing the generalised hybrid Monte-Carlo algorithm
نویسندگان
چکیده
منابع مشابه
Implementing The Generalised Hybrid Monte-Carlo Algorithm
UKQCD’s dynamical fermion project uses the Generalised Hybrid Monte Carlo (GHMC) algorithm to generate QCD gauge configurations for a non-perturbatively O(a) improved Wilson action with two degenerate sea-quark flavours. We describe our implementation of the algorithm on the Cray-T3E, concentrating on issues arising from code verification and performance optimisation, such as parameter tuning, ...
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Institut für Physik, Humboldt-Universität zu Berlin, 12489 Berlin, Germany Joint Institute for Nuclear Research, 141980 Dubna, Russia Institut für Theoretische Physik, Universität Leipzig, 04109 Leipzig, Germany Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany School of Physics, The University of Edinburgh, Edinburgh EH9 3JZ, UK John von Neumann-Institut für C...
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We apply the Hybrid Monte Carlo Algorithm to pure gauge QCD and to QCD with 4 flavors of staggered dynamical fermions. We show how the acceptance in the global Metropolis step depends upon the parameters of the algorithm. By tuning the values of the coupling constants in the algorithm to be different from those in the global Metropolis step, we find that the acceptance can be kept large without...
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The past few years have seen considerable progress in algorithmic development for the generation of gauge fields including the effects of dynamical fermions. The Rational Hybrid Monte Carlo (RHMC) algorithm, where Hybrid Monte Carlo is performed using a rational approximation in place the usual inverse quark matrix kernel is one of these developments. This algorithm has been found to be extreme...
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We study analytically the computational cost of the Generalised Hybrid Monte Carlo (GHMC) algorithm for free field theory. We calculate the Metropolis acceptance probability for leapfrog and higher-order discretisations of the Molecular Dynamics (MD) equations of motion. We show how to calculate autocorrelation functions of arbitrary polynomial operators, and use these to optimise the GHMC mome...
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ژورنال
عنوان ژورنال: Nuclear Physics B - Proceedings Supplements
سال: 1998
ISSN: 0920-5632
DOI: 10.1016/s0920-5632(97)00951-1