Quasimaps of Surfaces
Organizers
Speaker
Time
Thursday, January 8, 2026 3:00 PM - 4:00 PM
Venue
A6-101
Online
Zoom 638 227 8222
(BIMSA)
Abstract
We present a string-theoretic approach to surface counting in local Calabi-Yau fourfolds via supersymmetric localization in topologically twisted four-dimensional gauge theories. The approach is based on a correspondence between PT1-stable pairs on local fourfolds and twisted quasimaps with fixed two-dimensional domain associated to the ADHM quiver.
For toric fourfolds, we derive a conjectural formula for the K-theoretic quasimap partition function via Coulomb branch localization. As a result,
we obtain a prescription fixing all sign ambiguities in the equivariant computation of such invariants.
Based on 2508.11512 with E. Diaconescu.
For toric fourfolds, we derive a conjectural formula for the K-theoretic quasimap partition function via Coulomb branch localization. As a result,
we obtain a prescription fixing all sign ambiguities in the equivariant computation of such invariants.
Based on 2508.11512 with E. Diaconescu.