Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
1997-04-09
Phys.Rev.D56:161-173,1997
Physics
High Energy Physics
High Energy Physics - Lattice
28 pages, RevTeX, 12 figures using epsfig (included); accepted for publication in Physical Review
Scientific paper
10.1103/PhysRevD.56.161
Using a tadpole improved SU(2) gluodynamics action, the nonabelian potential and the abelian potential after the abelian projection are computed. Rotational invariance is found restored at coarse lattices both in the nonabelian theory and in the effective abelian theory resulting from maximal abelian projection. Asymptotic scaling is tested for the SU(2) string tension. Deviation of the order of $6%$ is found, for lattice spacings between 0.27 and 0.06 fm. Evidence for asymptotic scaling and scaling of the monopole density in maximal abelian projection is also seen, but not at coarse lattices. The scaling behavior is compared with analyses of Wilson action results, using bare and renormalized coupling schemes. Using extended monopoles, evidence is found that the gauge dependence of the abelian projection reflects short distance fluctuations, and may thus disappear at large scales.
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