Zobrazeno 1 - 10
of 60
pro vyhledávání: '"Bowman, Patrick O."'
Publikováno v:
Phys.Rev.D83:094504,2011
We calculate the probability distributions of quarks in the ground state of the proton, and how they are affected in the presence of a constant background magnetic field. We focus on wave functions in the Landau and Coulomb gauges. We observe the for
Externí odkaz:
http://arxiv.org/abs/1011.1975
Autor:
Bowman, Patrick O., Langfeld, Kurt, Leinweber, Derek B., Sternbeck, André, von Smekal, Lorenz, Williams, Anthony G.
Publikováno v:
Phys.Rev.D84:034501,2011
We study the behavior of the AsqTad quark propagator in Landau gauge on SU(3) Yang-Mills gauge configurations under the removal of center vortices. In SU(2) gauge theory, center vortices have been observed to generate chiral symmetry breaking and dom
Externí odkaz:
http://arxiv.org/abs/1010.4624
Publikováno v:
PoS LAT2009:023,2009
The impact of stout-link smearing in lattice fermion actions is examined through the consideration of the mass and renormalization functions of the overlap quark propagator over a variety of smeared configurations. Up to six sweeps of stout-link smea
Externí odkaz:
http://arxiv.org/abs/0910.2781
Publikováno v:
Phys.Rev.D80:074503,2009
The properties of the momentum space quark propagator in Landau gauge are studied for the overlap quark action in quenched lattice QCD. Numerical calculations are performed over four ensembles of gauge configurations, where three are smeared using ei
Externí odkaz:
http://arxiv.org/abs/0908.3726
Autor:
Bowman, Patrick O., Langfeld, Kurt, Leinweber, Derek B., Cais, Alan O', Sternbeck, Andre, von Smekal, Lorenz, Williams, Anthony G.
Publikováno v:
Phys.Rev.D78:054509,2008
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 SU(3), we clearly see the infrared enhancement of the mass function dis
Externí odkaz:
http://arxiv.org/abs/0806.4219
Publikováno v:
Phys.Rev.D78:014033,2008
We calculate the ghost two-point function in Coulomb gauge QCD with a simple model vacuum gluon wavefunction using Monte Carlo integration. This approach extends the previous analytic studies of the ghost propagator with this ansatz, where a ladder-r
Externí odkaz:
http://arxiv.org/abs/0805.0627
Publikováno v:
Phys.Rev.D76:094501,2007
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 Luscher-Weisz gauge action is used in both cases. The dynamical gauge fields
Externí odkaz:
http://arxiv.org/abs/0705.4129
Autor:
Bowman, Patrick O., Heller, Urs M., Leinweber, Derek B., Parappilly, Maria B., Sternbeck, Andre, von Smekal, Lorenz, Williams, Anthony G., Zhang, Jianbo
Publikováno v:
Phys.Rev.D76:094505,2007
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 the nonperturbative infrared enhancement relative to the quenched cas
Externí odkaz:
http://arxiv.org/abs/hep-lat/0703022
Autor:
Parappilly, Maria B., Bowman, Patrick O., Heller, Urs M., Leinweber, Derek B, Williams, Anthony G., Zhang, J. B.
Publikováno v:
AIP Conf.Proc.842:237-239,2006
We present an unquenched calculation of the quark propagator in Landau gauge with 2+1 flavors of dynamical quarks. We study the scaling behavior of the quark propagator in full QCD on two lattices with different lattice spacings and similar physical
Externí odkaz:
http://arxiv.org/abs/hep-lat/0601010
Autor:
Parappilly, Maria B., Bowman, Patrick O., Heller, Urs M., Leinweber, Derek B ., Williams, Anthony G., Zhang, J. B
Publikováno v:
Phys.Rev.D73:054504,2006
We study the scaling behavior of the quark propagator on two lattices with similar physical volume in Landau gauge with 2+1 flavors of dynamical quarks in order to test whether we are close to the continuum limit for these lattices. We use configurat
Externí odkaz:
http://arxiv.org/abs/hep-lat/0511007