2006-10-20
Takashi Kimura, Boston University
Equivariant topological quantum field theory, stringy K-theory,
and the Chern character
We introduce K-theoretic analogs of stringy cohomology and of
Chen-Ruan orbifold cohomology. We explain how these are related to
equivariant (1+1)-dimensional topological quantum field theories. We
also explain its relationship to equivariant Gromov-Witten theory.