Numerical simulations with two flavours of twisted-mass Wilson quarks and DBW2 gauge action

Farchioni, F.; Hofmann, P.; Jansen, K.; Montvay, I.; Muenster, G.; Scholz, E. E.; Scorzato, L.; Shindler, A.; Ukita, N.; Urbach, C.; Wenger, U.; Wetzorke, I.

Numerical simulations with two flavours of twisted-mass Wilson quarks and DBW2 gauge action

Authors

Description

Discretisation errors in two-flavour lattice QCD with Wilson-quarks and DBW2 gauge action are investigated by comparing numerical simulation data at two values of the bare gauge coupling. Both non-zero and zero twisted mass values are considered. The results, including also data from simulations using the Wilson plaquette gauge action, are compared to next-to-leading order chiral perturbation theory formulas.
53 pages, 11 tables, 18 figures; discussion extended