Instanton-induced crossover in dense QCD

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

We study the properties of an instanton ensemble in three-flavor dense QCD which can be regarded as an instanton plasma weakly interacting by exchanging the η′ mesons. Based on this description, we explore the chiral phase transition induced by the instanton ensemble at high baryon density in analogy with the Berezinskii-Kosterlitz-Thouless transition. Using the renormalization group approach, we show that the instanton ensemble always behaves as a screened and unpaired plasma. We also demonstrate that the chiral condensate in dense QCD is proportional to the instanton density.

Original languageEnglish
Article number060
JournalJournal of High Energy Physics
Volume2008
Issue number12
DOIs
Publication statusPublished - 2008
Externally publishedYes

Fingerprint

instantons
crossovers
quantum chromodynamics
exchanging
condensates
baryons
mesons

Keywords

  • QCD
  • Renormalization Group
  • Solitons Monopoles and Instantons

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Instanton-induced crossover in dense QCD. / Yamamoto, Naoki.

In: Journal of High Energy Physics, Vol. 2008, No. 12, 060, 2008.

Research output: Contribution to journalArticle

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AB - We study the properties of an instanton ensemble in three-flavor dense QCD which can be regarded as an instanton plasma weakly interacting by exchanging the η′ mesons. Based on this description, we explore the chiral phase transition induced by the instanton ensemble at high baryon density in analogy with the Berezinskii-Kosterlitz-Thouless transition. Using the renormalization group approach, we show that the instanton ensemble always behaves as a screened and unpaired plasma. We also demonstrate that the chiral condensate in dense QCD is proportional to the instanton density.

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