Speaker
Dr
Zhe Wang
(RIKEN iTHEMS)
Description
It was first observed by Witten and soon proved by Kontsevich that the two-point correlation function of the 2d quantum gravity theory is a solution of the KdV hierarchy. Since then, relationships between 2d topological field theories coupling with gravity and integrable hierarchies have been studied in a great detail. In this talk, I will explain a canonical correspondence between semisimple 2d topological field theories and bihamiltonian integrable hierarchies with central invariants equal to 1/24.