Title: Thermal Effects of a Massive Vector Boson and the Corresponding Applications

Speaker: Professor Yilei Tang (Sun Yat-sen University)

Time: 14:00pm, August 15, 2023

Location: 3-402, PMO Xianlin Campus

Abstract: Usually in the literature, the behavior of a massive vector boson in the thermal plasma remains unconcerned. I studied the thermal corrections of a vector boson in the real time formalism, and applied the results in two cases, the leptogenesis induced by a electroweak scale sterile neutrino, and the freeze-in process of the dark matter mediated by a massive vector boson. In both cases, the dispersion relations of transverse/longitudinal/Goldstone degrees of freedom play important roles.