Non-equilibrium in the early Universe via the Wilson Renormalization Group

por Massimo Pietroni (INFN-Sezione di Padova-Italy)

miércoles 20 may. 1998 12:00 → 13:00 Europe/Madrid

Sala Seminarios (Dpto. de Fisica Teorica (UVEG))

Many interesting aspects of the Early Universe involve physics out of thermal equilibrium, which cannot be studied reliably in the framework of thermal perturbation theory. After reviewing the shortcomings of the perturbative approach, we describe the use of the Wilson Renormalization Group at finite temperature and its application in the cosmological context. In particular we will discuss thermal masses, damping rates, phase transitions, and the anomalous baryon number violation above the electroweak phase transition.