An Efficient Algorithm for QCD with Light Dynamical Quarks

Details An Efficient Algorithm for QCD with Light Dynamical Quarks An Efficient Algorithm for QCD with Light Dynamical Quarks

1998-06-19

arxiv.org/abs/hep-lat/9806020v1

Phys.Rev. D59 (1999) 014505

Physics

High Energy Physics

High Energy Physics - Lattice

37 pages (Latex) including 18 figures (EPS)

Scientific paper

10.1103/PhysRevD.59.014505

A new approach to the inclusion of virtual quark effects in lattice QCD simulations is presented. Infrared modes which build in the chiral physics in the light quark mass limit are included exactly and in a gauge invariant way. At fixed physical volume the number of relevant infrared modes does not increase as the continuum limit is approached. The acceptance of our procedure does not decrease substantially in the limit of small quark masses. Two alternative approaches are discussed for including systematically the remaining ultraviolet modes. In particular, we present evidence that these modes are accurately described by an effective action involving only small Wilson loops.

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