Lecture Room B, 4th Floor, The 3rd General Building, NTHU
(清華大學綜合三館 4樓B演講室)
Quasi-Hamiltonian system and the moduli space of flat connections
Nan-Kuo Ho (National Tsing Hua University)
We will continue the theme of looking at generalizations of symplectic manifolds/hamiltonian system. Quasi-Hamiltonian system is a generalization of hamiltonian system where the symplectic form is no longer closed nor non-degenerate, and the moment map image is not in the dual of the Lie algebra but in the Lie group. This system arises naturally from the study of moduli space of flat connections. It can also be used to study Higss bundles and meromorphic connections. The main reference is "Lie group valued moment map" by Alekseev, Malkin, and Meinrenken.
