Functional renormalization group approach to color superconducting phase transition

Gergely Fejős, Naoki Yamamoto

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


We investigate the order of the color superconducting phase transition using the functional renormalization group approach. We analyze the Ginzburg-Landau effective theory of color superconductivity and more generic scalar SU(Nc) gauge theories by calculating the β function of the gauge coupling in arbitrary dimension d based on two different regularization schemes. We find that in d = 3, due to gluon fluctuation effects, the β function never admits an infrared fixed point solution. This indicates that, unlike the ordinary superconducting transition, color superconductivity can only show a first-order phase transition.

Original languageEnglish
Article number69
JournalJournal of High Energy Physics
Issue number12
Publication statusPublished - 2019 Dec 1


  • Gauge Symmetry
  • Phase Diagram of QCD
  • Renormalization Group

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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