Speaker
Dr
Nilanjan Chaudhuri
(Variable Energy Cyclotron Centre, Kolkata, India)
Description
Quantum chromodynamics (QCD) possesses infinitely many degenerate
vacua distinguished by winding numbers with transitions mediated by topological
gauge fields that flip helicities of quark. This induces local P and CP violation and
generates a chirality imbalance, described by a chiral chemical potential. We will
study collective oscillations of partonic degrees of freedom in such a system using
hard thermal loop approximation. The effective propagator derived via the
Schwinger–Dyson approach provides a basis for evaluating observables such as
photon damping, photon emission and dilepton production in chiral QCD matter.
