The consideration of quantum fields defined on a spacetime lattice provides computational
techniques which are invaluable for studying gauge theories nonperturbatively from first …

In lattice QCD it is possible, in principle, to determine the parameters in the effective chiral
Lagrangian (including weak interaction couplings) by performing numerical simulations in …

We present the first set of quenched QCD measurements using the recently parametrized
fixed-point Dirac operator DFP. We also give a general and practical construction of …

The Landau-gauge quark propagator is calculated using overlap valence fermions on 2+ 1-
flavour dynamical clover fermion gauge fields from the PACS-CS collaboration with pion …

The first calculation of the response of the momentum space quark propagator to center
vortices in the ground state fields of QCD is presented. Center vortices are identified on 2+ 1 …

We present results from quenched spectroscopy calculations with the parametrized fixed-
point and the chirally improved Dirac operators. Both these operators are approximate …

We study the Schwinger model with N f≥ 2 degenerate fermion flavors, by means of lattice
simulations. We use dynamical Wilson fermions for N f= 2, and reweighted quenched …

The use of APE smearing or other blocking techniques in lattice fermion actions can provide
many advantages. There are many variants of these fat link actions in lattice QCD currently …

Physics issues in simulations with dynamical overlap fermions Page 1 Physics issues in
simulations with dynamical overlap fermions Thomas DeGrand and Stefan Schaefer …

We present a parameter-free Wilson-type lattice Dirac operator with an 81-point stencil for
the covariant derivative and the Laplacian, which attempts to minimize the breaking of …