Speeding up Lattice QCD simulations with clover-improved Wilson Fermions

@inproceedings{Hasenbusch2002SpeedingUL,
  title={Speeding up Lattice QCD simulations with clover-improved Wilson Fermions},
  author={Martin Hasenbusch and Karl Jansen},
  year={2002}
}
We apply a recent proposal to speed up the Hybrid-Monte-Carlo simulation of systems with dynamical fermions to two flavour QCD with cloverimprovement. 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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