Topological structure in the SU(2) vacuum

Details Topological structure in the SU(2) vacuum Topological structure in the SU(2) vacuum

1997-09-23

arxiv.org/abs/hep-lat/9709095v1

Nucl.Phys.Proc.Suppl. 63 (1998) 528-530

Physics

High Energy Physics

High Energy Physics - Lattice

3 pages, LaTeX, 3 figures, uses espcrc2.sty, Talk given at LATTICE97

Scientific paper

10.1016/S0920-5632(97)00823-2

We study the topological content of the vacuum of SU(2) pure gauge theory using lattice simulations. We use a smoothing process based on the renormalization group equation. This removes short distance fluctuations but preserves long distance structure. The action of the smoothed configurations is dominated by instantons, but they still show an area law for Wilson loops with an unchanged string tension. The average radius of an instanton is about 0.2 fm, at a density of about 2 fm${}^{-4}$.

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