Instanton molecules at high temperature - the Georgi-Glashow model and beyond

Kogan I., Tekin B., Kovner A.

JOURNAL OF HIGH ENERGY PHYSICS, no.3, 2001 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Publication Date: 2001
  • Journal Name: JOURNAL OF HIGH ENERGY PHYSICS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Middle East Technical University Affiliated: No

Abstract

We show that correlators of some local operators in gauge theories are sensitive to the presence of the instantons even at high temperature where the latter are bound into instanton-anti-instanton "molecules". We calculate correlation functions of such operators in the deconfined phase of the 2+1 dimensional Georgi-Glashow model and discuss analogous quantities in the chirally symmetric phase of QCD. We clarify the mechanism by which the instanton-anti-instanton molecules contribute to the anomaly of axial U(1) at high temperature.