Dynamical Fermions with Fat Links

Details Dynamical Fermions with Fat Links Dynamical Fermions with Fat Links

2000-12-20

arxiv.org/abs/hep-lat/0012022v2

Phys.Rev. D63 (2001) 114502

Physics

High Energy Physics

High Energy Physics - Lattice

11 pages, 4 figures, detailed description of over-relaxation and references added, figures with more statistics

Scientific paper

10.1103/PhysRevD.63.114502

We present and test a new method for simulating dynamical fermions with fat links. Our construction is based on the introduction of auxiliary but dynamical gauge fields and works with any fermionic action and can be combined with any fermionic updating. In our simulation we use an over-relaxation step which makes it effective. For four flavors of staggered fermions first results indicate that flavor symmetry at a lattice spacing a~0.2 fm is restored to a few percent. With the standard action this amount of flavor symmetry restoration is achieved at a~0.07 fm. We estimate that the overall computational cost is reduced by at least a factor 10.

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