Does the chiral magnetic effect change the dynamic universality class in QCD?

Masaru Hongo, Noriyuki Sogabe, Naoki Yamamoto

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

In QCD matter under an external magnetic field, the chiral magnetic effect (CME) leads to the collective gapless mode called the chiral magnetic wave (CMW). Since dynamic universality class generally depends on low-energy gapless modes, it is nontrivial whether the CME and the resulting CMW change that of the second-order chiral phase transition in QCD. To address this question, we study the critical dynamics near the chiral phase transition in massless two-flavor QCD under an external magnetic field. By performing the dynamic renormalization-group analysis within the ϵ expansion, we find that the presence of the CME changes the dynamic universality class to that of model A. We also show that the transport coefficient of the CME is not renormalized by the critical fluctuations of the order parameter.

Original languageEnglish
Article number108
JournalJournal of High Energy Physics
Volume2018
Issue number11
DOIs
Publication statusPublished - 2018 Nov 1

Keywords

  • Anomalies in Field and String Theories
  • Phase Diagram of QCD
  • QuarkGluon Plasma
  • Renormalization Group

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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