Aspects of finite temperature QCD towards the chiral limit

Abstract

QCD under extreme conditions has been studied for a long time, and the chiral limit has been a grey area mostly. In this write-up of my talk, I review some of the recent developments made by the community to unveil various features of QCD towards the chiral limit, which includes calculation of the chiral critical temperature and determination of the order of chiral phase transition for various numbers of flavors. Acknowledging the importance of the studies regarding the effective restoration of 𝑈 𝐴 (1), I try to give a comprehensive overview about the various studies done in the last few years in a comparative manner to realize the current status of the community in this regard. I also discuss very recent efforts about the relevance of various energy-like observables w.r.t. the chiral phase transition.

Backreaction of mesonic fluctuations on the axial anomaly at finite temperature

“…Studies on the finite temperature recovery of the axial anomaly have a huge body of literature [8]. Most works were done on the lattice for two flavor QCD, and one usually measures to what extent appropriate masses and susceptibilities (χ) are degenerate as a function of the temperature.…”