Simulating dynamical fermions with smeared links

Details Simulating dynamical fermions with smeared links Simulating dynamical fermions with smeared links

2001-10-18

arxiv.org/abs/hep-lat/0110156v1

Nucl.Phys.Proc.Suppl. 106 (2002) 1058-1060

Physics

High Energy Physics

High Energy Physics - Lattice

3 pages, Lattice2001(algorithms)

Scientific paper

Smearing the gauge links of dynamical configurations removes small scale unphysical vacuum fluctuations and thus improves the chiral properties of lattice fermions. Recently we proposed the hypercubic smearing (HYP) that improves the flavor symmetry of staggered fermions by an order of magnitude with only minimal distortions at small distances. We describe a new algorithm to simulate dynamical HYP fermions based on the standard pure gauge overrelaxation and heatbath updates. The algorithm has been used to simulate four and two flavors of staggered fermions. Unlike standard dynamical simulation techniques, this algorithm does not loose efficiency at small quark masses.

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