Instanton vacuum in thermal QCD

V. V. Khoze, A. V. Yung

Research output: Contribution to journalArticle

12 Scopus citations

Abstract

The effects of instanton-anti-instanton interactions in high-temperature QCD with colour SU(2) are studied with and without quarks. The instanton potential proves to have no repulsive core, thus creating troubles with the definition of nonperturbative contributions to physical quantities. Also the chiral condensate is calculated, and it is shown to vanish if number of quark flavours Nf≧2, whereas for Nf=1 it is nonzero for the arbitrary high temperature.

Original languageEnglish (US)
Pages (from-to)155-163
Number of pages9
JournalZeitschrift für Physik C Particles and Fields
Volume50
Issue number1
DOIs
StatePublished - Mar 1 1991

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