Title: K-theory in String Theory
Speaker: Jarah Evslin (Theoretical Physics Center for Science Facilities,CAS, Beijing)
Abstract: The fundamental objects of study in string theory are called D-branes. Intuitively, these are submanifolds of the spacetime manifold with principle bundles fibered over them. A one to one map has been conjectured between D-branes and elements of twisted K-theory. I will explain this map, some of its applications and its shortcomings.