Michele Cirafici (Instituto Superior Técnico)

Quivers and Donaldson-Thomas theory on local threefolds 

Donaldson-Thomas invariants of Calabi-Yau manifolds represent stable BPS states in string theory. They can be studied as generalized instanton of a topological gauge theory defined on the Calabi-Yau. I will present an ADHM-like formalism to study these instantons and its extension to orbifolds.