Maths HEP Lunchtime Seminars: Strongly Coupled Chiral Transitions and Inflation
3 June 2011 13:00 in CM221
Some strongly coupled gauge theories with simple AdS/CFT descriptions display chiral symmetry breaking in the presence of a running coupling or magnetic field. I describe the temperature-chemical potential phase structure of some of these theories which display a variety of phase transitions of first and second order. It would be interesting to holographically derive the effective Landau Ginzberg potential for these transitions and I will discuss on going work to derive that using holographic Wilsonian renormalization ideas.
AdS/CFT also allows the study of out of equilibrium problems at these transitions - as an example I discuss using a strongly coupled gauge theory as an inflaton in the early Universe. I show how the model reduces to a canonical single inflaton model and discuss how the gauge coupling should walk to achieve many e-folds.