Quasi-instantons in QCD with chiral symmetry restoration

Takuya Kanazawa, Naoki Yamamoto

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

We show, without using semiclassical approximations, that, in high-temperature QCD with chiral symmetry restoration and U(1)A symmetry breaking, the partition function for sufficiently light quarks can be expressed as an ensemble of noninteracting objects with topological charge that obey the Poisson statistics. We argue that the topological objects are "quasi-instantons" (rather than bare instantons) taking into account quantum effects. Our result is valid even close to the (pseudo)critical temperature of the chiral phase transition.

Original languageEnglish
Article number105015
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume91
Issue number10
DOIs
Publication statusPublished - 2015 May 20

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instantons
restoration
quantum chromodynamics
symmetry
partitions
broken symmetry
critical temperature
statistics
quarks
approximation

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Quasi-instantons in QCD with chiral symmetry restoration. / Kanazawa, Takuya; Yamamoto, Naoki.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 91, No. 10, 105015, 20.05.2015.

Research output: Contribution to journalArticle

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