Published on *Max Planck Institute for Mathematics* (http://www.mpim-bonn.mpg.de)

Posted in

- Talk [1]

Speaker:

Lotte Hollands
Affiliation:

Heriot-Watt University, Edinburgh
Date:

Tue, 2017-11-28 10:30 - 11:30 Nekrasov, Rosly and Shatashvili observed that the generating function of a certain space

of ${\rm SL}(2)$ opers has a physical interpretation as the effective twisted superpotential

for a four-dimensional $\mathcal{N}=2$ quantum field theory. In this talk we describe the

ingredients needed to generalise this observation to higher rank. Important ingredients are

spectral networks generated by Strebel differentials and the abelianization method. As an

example we find the twisted superpotential for the $E_6$ Minahan-Nemeschansky theory.

**Links:**

[1] http://www.mpim-bonn.mpg.de/taxonomy/term/39

[2] http://www.mpim-bonn.mpg.de/node/3444

[3] http://www.mpim-bonn.mpg.de/YRSM2017