Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2004-10-30
JHEP 0412:044,2004
Physics
High Energy Physics
High Energy Physics - Lattice
22 pages, 10 figures
Scientific paper
10.1088/1126-6708/2004/12/044
We compare the behavior of overlap fermions, which are chirally invariant, and of Wilson twisted mass fermions at full twist 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 applications. Our comparison is done at a fixed value of the lattice spacing a=0.123 fm. A number of quantities are measured such as hadron masses, pseudoscalar decay constants and quark masses obtained from Ward identities. We also determine the axial vector renormalization constants in the case of overlap fermions.
Bietenholz Wolfgang
Capitani Stefano
Chiarappa T.
Christian Nils
Hasenbusch Martin
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