9 papers
The strong coupling constant from lattice QCD with N_f=2 dynamical quarks
S. Booth, M. Göckeler, R. Horsley +8
We compute for two flavors of light dynamical quarks using non-perturbatively improved Wilson fermions. We improve on a recent calculation by employing Padé-i…
Effects of non-perturbatively improved dynamical fermions in QCD at fixed lattice spacing
UKQCD Collaboration, C. R. Allton, S. P. Booth +17
We present results for the static inter-quark potential, lightest glueballs, light hadron spectrum and topological susceptibility using a non-perturbatively improved action on a $1…
Determination of from quenched and dynamical QCD
S. Booth, M. Göckeler, R. Horsley +8
The scale parameter is computed on the lattice in the quenched approximation and for flavors of light dynamical quarks. The dynamical calculation is d…
Instability in the Molecular Dynamics Step of Hybrid Monte Carlo in Dynamical Fermion Lattice QCD Simulations
Balint Joo, Brian Pendleton, Anthony D. Kennedy +5
We investigate instability and reversibility within Hybrid Monte Carlo simulations using a non-perturbatively improved Wilson action. We demonstrate the onset of instability as tol…
Parallel Tempering in Lattice QCD with O(a)-Improved Wilson Fermions
Balint Joo, Alan C Irving, James C. Sexton +4
We present details of our investigation of the Parallel Tempering algorithm. We consider the application of action matching technology to the selection of parameters. We then prese…
Tuning Actions and Observables in Lattice QCD
Alan C. Irving, James C. Sexton, Eamonn Cahill +5
We propose a strategy for conducting lattice QCD simulations at fixed volume but variable quark mass so as to investigate the physical effects of dynamical fermions. We present det…