Monday, January 30, 2012
3481 Randall (Oskar Klein Conference Room)
Speaker: Dionysius Anninos (Stanford University)We will explore and apply techniques developed to study the physics of glassy physics in the cosmological setting of asymptotically de Sitter universes. In particular, we will study the vast state space of light fields at late times by defining a notion of overlap distributions and uncover an ultrametric structure in the triple overlap distribution. This same structure was discovered by Parisi when studying the Sherrington-Kirkpatrick model of a spin glass and implies a hierarchical, tree-like organization of the state space.