The PHMC algorithm for simulations of dynamical fermions: II - Performance analysis

Details The PHMC algorithm for simulations of dynamical fermions: II - Performance analysis The PHMC algorithm for simulations of dynamical fermions: II - Performance analysis

1998-08-26

arxiv.org/abs/hep-lat/9808038v1

Nucl.Phys. B555 (1999) 432-453

Physics

High Energy Physics

High Energy Physics - Lattice

Latex2e file, 6 figures, 31 pages

Scientific paper

10.1016/S0550-3213(99)00322-3

We compare the performance of the PHMC algorithm with the one of the HMC algorithm in practical simulations of lattice QCD. We show that the PHMC algorithm can lead to an acceleration of numerical simulations. It is demonstrated that the PHMC algorithm generates configurations carrying small isolated eigenvalues of the lattice Dirac operator and hence leads to a sampling of configuration space that is different from that of the HMC algorithm.

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