01.10.2020 (Thursday)

BPS counting with exponential networks (email p.agarwal AT qmul.ac.uk for the zoom link))

Regular Seminar Pietro Longhi (ETH Zurich)

14:00 QMW
room Zoom

Spectral networks compute certain enumerative invariants associated with Hitchin systems, by focusing on the interplay of certain geometric and combinatorial data within them. In physics, spectral networks count BPS states of class S theories through 2d-4d wall crossing. I will describe a 3d-5d uplift of this based on exponential networks, that computes generalized Donaldson-Thomas invariants of toric Calabi Yau threefolds.