We introduce new discretizations of the action for static quarks. They achieve an exponential improvement (compared to the Eichten-Hill regularization) on the signal to noise ratio in staticâ€“lightâ€¦ (More)

We give a continuum limit value of the lowest moment of a twist-2 operator in pion states from non-perturbative lattice calculations. We find that the non-perturbatively obtained renormalizationâ€¦ (More)

We present a comprehensive investigation of light meson physics using maximally twisted mass fermions for Nf = 2 mass-degenerate quark flavours. By employing four values of the lattice spacing,â€¦ (More)

We present results of dynamical simulations of Nf = 2 degenerate Wilson twisted mass quarks at maximal twist in the range of pseudo scalar masses 300 MeV . mPS . 550 MeV. Reaching such small massesâ€¦ (More)

The effect of changing the lattice action for the gluon field on the recently observed [1] first order phase transition near zero quark mass is investigated by replacing the Wilson plaquette actionâ€¦ (More)

We present the results of a lattice QCD calculation of the average up-down and strange quark masses and of the light meson pseudoscalar decay constants with Nf = 2 dynamical fermions. The simulationâ€¦ (More)

We investigate the scaling behaviour of quenched Wilson twisted mass fermions at maximal twist applying two definitions of the critical mass. The first definition uses the vanishing of theâ€¦ (More)

We discuss the usage of continuous external momenta for computing renormalization factors as needed to renormalize operator matrix elements. These kind of external momenta are encoded in specialâ€¦ (More)

The SchrÃ¶dinger functional provides a valuable tool to perf orm non-perturbative renormalization on the lattice, in particular in a mass independent scheme. W e study two different types of chirallyâ€¦ (More)