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6 papers · 2 filters
New results on cut-off effects in spectroscopy with the fixed point action
Peter Hasenfratz, K. Jimmy Juge, Ferenc Niedermayer
Our study on the cut-off effects in quenched light hadron spectroscopy and pion scattering length with the fixed point action is extended by results obtained at a lattice spacing a…
Fermion Determinants: Some Recent Analytic Results
M. P. Fry
The use of known analytic results for the continuum fermion determinants in QCD and QED as benchmarks for zero lattice spacing extrapolations of lattice fermion determinants is pro…
Static-light matrix elements on a dynamical anisotropic lattice
K. Jimmy Juge, Richie Morrin, Alan O Cais +3
The static-light matrix element needed to determine is studied on an anisotropic lattice with . The improvement in precision due to stout links and all-to-all propagat…
A perturbative determination of the parameters of an anisotropic quark action
Justin Foley, Mike Peardon, Sinead M. Ryan
The parameters of a 3+1 anisotropic quark action with Symanzik-improved glue are determined at 1-loop in perturbation theory.
Quark-gluon vertex in arbitrary kinematics
Jon-Ivar Skullerud, Patrick O. Bowman, Ayse Kizilersu +2
We compute the quark-gluon vertex in quenched lattice QCD, in the Landau gauge using an off-shell mean-field O(a)-improved fermion action. The complete vertex is computed in two sp…
A non-perturbative study of the action parameters for anisotropic-lattice quarks
Justin Foley, Alan O Cais, Mike Peardon +1
A quark action designed for highly anisotropic lattice simulations is discussed. The mass-dependence of the parameters in the action is studied and the results are presented. Appli…