Comparison between overlap and twisted mass fermions towards the chiral limit

Details Comparison between overlap and twisted mass fermions towards the chiral limit Comparison between overlap and twisted mass fermions towards the chiral limit

2004-09-17

arxiv.org/abs/hep-lat/0409109v1

Nucl.Phys.Proc.Suppl.140:683-685,2005

Physics

High Energy Physics

High Energy Physics - Lattice

Lattice2004(chiral)

Scientific paper

10.1016/j.nuclphysbps.2004.11.37

We compare overlap fermions, which are chirally invariant, and Wilson twisted mass fermions in the approach to the chiral limit. Our quenched simulations reveal that with both formulations of lattice fermions pion masses of O(250 MeV) can be reached in practical simulations. Our comparison is done at a fixed lattice spacing a=0.123 fm. Several quantities are measured, such as hadron masses and pseudoscalar decay constants.

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