Speeding up Lattice QCD simulations with clover-improved Wilson Fermions

Details Speeding up Lattice QCD simulations with clover-improved Wilson Fermions Speeding up Lattice QCD simulations with clover-improved Wilson Fermions

2002-11-29

arxiv.org/abs/hep-lat/0211042v1

Nucl.Phys. B659 (2003) 299-320

Physics

High Energy Physics

High Energy Physics - Lattice

26 pages, 2 figures

Scientific paper

10.1016/S0550-3213(03)00227-X

We apply a recent proposal to speed up the Hybrid-Monte-Carlo simulation of systems with dynamical fermions to two flavour QCD with clover-improvement. The basic idea of our proposal is to split the fermion matrix into two factors with a reduced condition number each. In the effective action, for both factors a pseudo-fermion field is introduced. For our smallest quark masses we see a speed-up of more than a factor of two compared with the standard algorithm.

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