IR issues in Inflation – Richard Holman
Date: Fri. October 15th, 2010, 11:30 am-12:30 pmLocation: Rockefeller 221
I review some problems involving IR divergences in de Sitter space that give rise to behavior such as secular growth of fluctuations and discuss the use of the Dynamical Renormalization Group as a tool to resum and reinterpret these divergences. Time permitting, I’ll also discuss some more recent work on the breakdown of the semiclassical approximation in de Sitter space.