Семинар 24 апреля 2018. Sibasish Banerjee. Five-dimensional gauge theories and strings

*by: , @ Tue, 17 Apr 2018 19:00:15 +0400*

24 апреля 2018, в 12:45

Кафедра физики высоких энергий и элементарных частиц

Sibasish Banerjee (Max Planck Institute, Bonn)

Five-dimensional gauge theories and strings

Five-dimensional gauge theories preserving 8 supercharges possess a

rich spectrum of BPS states. Compactified on a torus, these theories

reduce to sigma-models whose target space gets instanton corrections

from these BPS states and carries an isometric action of the torus

modular group. I will present a joint work with Alexandrov and Longhi

where we showed that this sigma model can be captured in a rigid limit

of type II string theory compactified on a Calabi-Yau manifold. The

rigid limit is induced by a certain local limit on the Calabi-Yau. I

will also illustrate how the different instanton corrections on the

gauge theory side, which thus far remained elusive, can be understood in

the light of the recent progress made in studying the hypermultiplet

moduli space of string theory.