Hybrid Monte Carlo and topological modes of full QCD

Details Hybrid Monte Carlo and topological modes of full QCD Hybrid Monte Carlo and topological modes of full QCD

1996-07-22

arxiv.org/abs/hep-lat/9607049v2

Phys.Lett.B389:107-111,1996

Physics

High Energy Physics

High Energy Physics - Lattice

LaTeX2e, uses elsart.cls (included), amstex package, cite.sty (included). 8 pages, 1 figure. Change to the mass dependence of

Scientific paper

10.1016/S0370-2693(96)01247-6

We investigate the performance of the hybrid Monte Carlo algorithm, the standard algorithm used for lattice QCD simulations involving fermions, in updating non-trivial global topological structures. We find that the hybrid Monte Carlo algorithm has serious problems decorrelating the global topological charge at the values of $\beta$ and $m$ currently simulated, where continuum physics should be approximately realized. This represents a warning which must be seriously considered when simulating full QCD by hybrid Monte Carlo.

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