Decorrelating Topology with HMC

Physics – High Energy Physics – High Energy Physics - Lattice

Scientific paper

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change of comments: LATTICE98(confine)

Scientific paper

10.1016/S0920-5632(99)85124-X

The investigation of the decorrelation efficiency of the HMC algorithm with respect to vacuum topology is a prerequisite for trustworthy full QCD simulations, in particular for the computation of topology sensitive quantities. We demonstrate that for mpi/mrho ratios <= 0.69 sufficient tunneling between the topological sectors can be achieved, for two flavours of dynamical Wilson fermions close to the scaling region beta=5.6. Our results are based on time series of length 5000 trajectories.

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