Topological structure in the SU(2) vacuum

Thomas DeGrand, Anna Hasenfratz, Tamás G. Kovács

Research output: Contribution to journalArticle

4 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)528-530
Number of pages3
JournalNuclear Physics B - Proceedings Supplements
Issue number1-3
Publication statusPublished - Apr 1998

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics

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