Instanton vacuum in thermal QCD

V. V. Khoze; A. V. Yung

doi:10.1007/BF01558571

Instanton vacuum in thermal QCD

V. V. Khoze, A. V. Yung

Research output: Contribution to journal › Article › peer-review

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 N_f≧2, whereas for N_f=1 it is nonzero for the arbitrary high temperature.

Original language	English (US)
Pages (from-to)	155-163
Number of pages	9
Journal	Zeitschrift für Physik C Particles and Fields
Volume	50
Issue number	1
DOIs	https://doi.org/10.1007/BF01558571
State	Published - Mar 1991
Externally published	Yes

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10.1007/BF01558571

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title = "Instanton vacuum in thermal QCD",

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.",

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AU - Yung, A. V.

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AB - 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.

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ER -

Instanton vacuum in thermal QCD

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