171 citations · 311 across the 5 of their papers we have counts for
7 papers · 1 filter
Isolating the Roper Resonance in Lattice QCD
M. S. Mahbub, Alan Ò Cais, Waseem Kamleh +3
We present results for the first positive parity excited state of the nucleon, namely, the Roper resonance (=1440 MeV) from a variational analysis technique. The ana…
Center vortices and the quark propagator in SU(2) gauge theory
Patrick O. Bowman, Kurt Langfeld, Derek B. Leinweber +4
We study the behavior of the AsqTad quark propagator in Landau gauge on quenched SU(2) gauge configurations under the removal of center vortices. In contrast to recent results in S…
Scaling analysis of FLIC fermion actions
Waseem Kamleh, Ben Lasscock, Derek B. Leinweber +1
The Fat Link Irrelevant Clover (FLIC) fermion action is a variant of the -improved Wilson action where the irrelevant operators are constructed using smeared links. While the…
Unquenching effects in the quark and gluon propagator
Waseem Kamleh, Patrick O. Bowman, Derek B. Leinweber +2
In this work we examine the Fat-Link Irrelevant Clover (FLIC) overlap quark propagator and the gluon propagator on both dynamical and quenched lattices. The tadpole-improved Lusche…
Scaling behavior and positivity violation of the gluon propagator in full QCD
Patrick O. Bowman, Urs M. Heller, Derek B. Leinweber +5
The Landau-gauge gluon propagator is studied using the coarse and fine dynamical MILC configurations. The effects of dynamical quarks are clearly visible and lead to a reduction of…
Unquenched Gluon Propagator in Landau Gauge
Patrick O. Bowman, Urs M. Heller, Derek B. Leinweber +2
Using lattice quantum chromodynamics (QCD) we perform an unquenched calculation of the gluon propagator in Landau gauge. We use configurations generated with the AsqTad quark actio…