Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
1998-09-02
Physics
High Energy Physics
High Energy Physics - Lattice
4 pages LaTeX (4 figures), uses worldsci.sty, Talk given at Int. Conf. on ``Quark Confinement and the Hadron Spectrum III'', J
Scientific paper
We study abelian dominance for confinement in terms of the local gluon properties in the maximally abelian (MA) gauge, where the diagonal component of the gluon is maximized by the gauge transformation. We find microscopic abelian dominance on the link-variable for the whole region of $\beta$ in the lattice QCD in the MA gauge. The off-diagonal angle variable, which is not constrained by the MA-gauge fixing condition, tends to be random besides the residual gauge degrees of freedom. Within the random-variable approximation for the off-diagonal angle variable, we analytically prove that off-diagonal gluon contribution $W^{\rm off}$ to the Wilson loop obeys the perimeter law in the MA gauge. The perimeter-law behavior of $W^{\rm off}$ is also confirmed using the lattice QCD simulation. This indicates macroscopic abelian dominance for the string tension.
Ichie Hiroko
Suganuma Hideo
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