https://doi.org/10.1140/epjc/s2006-02549-y
Theoretical Physics
Numerical simulations with two flavours of twisted-mass Wilson quarks and DBW2 gauge action
1
Institut für Theoretische Physik, Universität Münster, Wilhelm-Klemm-Strasse 9, 48149, Münster, Germany
2
NIC/DESY Zeuthen, Platanenallee 6, 15738, Zeuthen, Germany
3
Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22603, Hamburg, Germany
4
Institut für Physik, Humboldt Universität zu Berlin, 12489, Berlin, Germany
5
Institut für Theoretische Physik, Freie Universität Berlin, Arnimallee 14, 14196, Berlin, Germany
* e-mail: montvay@mail.desy.de
Received:
19
December
2005
Revised:
21
March
2006
Published online:
7
June
2006
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.
© Springer-Verlag, 2006