Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2008-12-16
PoS Confinement8:048,2008
Physics
High Energy Physics
High Energy Physics - Theory
5 pages, talk presented at the 8th Conference Quark Confinement and the Hadron Spectrum, September 1-6, 2008, Mainz, Germany
Scientific paper
The complete cancellation of Gribov copies and the Neuberger 0/0 problem of lattice BRST can be avoided in modified lattice Landau gauge. In compact U(1), where the problem is a lattice artifact, there remain to be Gribov copies but their number is exponentially reduced. Moreover, there is no cancellation of copies there as the sign of the Faddeev-Popov determinant is positive. Applied to the maximal Abelian subgroup this avoids the perfect cancellation amongst the remaining Gribov copies for SU(N) also. In addition, based on a definition of gauge fields on the lattice as stereographically-projected link variables, it provides a framework for gauge fixed Monte-Carlo simulations. This will include all Gribov copies in the spirit of BRST. Their average is not zero, as demonstrated explicitly in simple models. This might resolve present discrepancies between gauge-fixed lattice and continuum studies of QCD Green's functions.
Jorkowski Alexander
Mehta Dhagash
Smekal Lorenz von
Sternbeck André
No associations
LandOfFree
Lattice Landau gauge via Stereographic Projection does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Lattice Landau gauge via Stereographic Projection, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lattice Landau gauge via Stereographic Projection will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-226810