Chiral and UA(1) symmetry in correlation functions in medium

Su Houng Lee, Sungtae Cho

Research output: Contribution to journalReview articlepeer-review

12 Citations (Scopus)


In this review, we will discuss how the chiral symmetry and U A(1) breaking effects are reflected in the correlation functions. Using the Banks-Casher formula, one can identify the density of zero eigenvalues to be the common ingredient that governs the chiral symmetry breaking in correlation functions between currents composed of light quarks with or without a heavy quark. Similarly, the presence of the UA(1) breaking effect is determined through the contribution of the topologically nontrivial configurations that depends on the number of flavors. We also discuss how the symmetry breaking effects are reflected in the gluon correlation functions. Finally, we review the Witten-Veneziano (WV) formula for the η' mass in medium.

Original languageEnglish
Article number1330008
JournalInternational Journal of Modern Physics E
Issue number3
Publication statusPublished - 2013 Mar

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy(all)


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