Decorrelating the topology in full QCD

Details Decorrelating the topology in full QCD Decorrelating the topology in full QCD

1996-08-22

arxiv.org/abs/hep-lat/9608123v1

Nucl.Phys.Proc.Suppl.53:544-546,1997

Physics

High Energy Physics

High Energy Physics - Lattice

Talk presented at LATTICE96(topology) LaTeX2e, uses espcrc2.sty (included), amstex package. 3 pages, 1 figure

Scientific paper

10.1016/S0920-5632(96)00713-X

We investigate the performance of the hybrid Monte Carlo algorithm in updating non-trivial global topological structures. We find that the hybrid Monte Carlo algorithm has serious problems decorrelating the global topological charge. This represents a warning which must be seriously considered when simulating full QCD, regardless of the number and type of fermions, with this or any similar algorithm. Simulated tempering is examined as a means of accelerating the decorrelation.

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