Date: 
April 23 (Wednesday), 2008, 10:00  12:00 and 13:00  15:00 
Place: 
Room 630, 6th floor, Research Centers Building, Kashiwa Campus of the University of Tokyo. 
Speaker: 
Motohico Mulase (University of California, Davis) 
Title: 
Integrable systems and intersection theory on moduli spaces of Riemann surfaces 
Abstract: 
Generating functions of GromovWitten
invariants are expected to satisfy the Virasoro constraint
conditions in general, but integrable systems appear
only for some special cases. Where do the KP and KdV
equations come from when they really do? In this talk
a new approach to this question in the context of
topological string theory recently proposed by French
physicists is surveyed. It resembles Saito's theory of
primitive forms in 2 dimensions.
