Gauge independence of Abelian and monopole dominance

We formulate a stochastic gauge fixing method to study the gauge dependence of Abelian projection. In this method, one can change the gauge from the maximally Abelian one to no gauge fixing continuously. We have found that the linear part of the heavy quark potential from Abelian contribution depends little on the gauge parameter. Similar results have been obtained for the monopole contribution part.We also investigate the gauge dependence of the length of monopole loop, which is known to be important for the confinement, and monopole density. These results suggest that the picture that monopole plays an important role for the confinement of QCD dose not depend on choice of the gauge.

Note:

Lattice 2000 (Topology), 4 pages, 7 figures, LaTeX

talk: Bangalore 2000/08/17
gauge field theory: SU(2)
lattice field theory
gauge: abelian
gauge fixing: stochastic
monopole: density
quark: potential
string tension
numerical calculations: Monte Carlo

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