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# BPS Invariant from Non Archimedean Integrals

## [HYBRID WORKSHOP] Connections Workshop: Analytic and Geometric Aspects of Gauge Theory August 25, 2022 - August 26, 2022

August 25, 2022 (02:00 PM PDT - 03:00 PM PDT)
Speaker(s): Francesca Carocci (École Polytechnique Fédérale de Lausanne (EPFL))
Location: MSRI: Simons Auditorium, Online/Virtual
Primary Mathematics Subject Classification No Primary AMS MSC
Secondary Mathematics Subject Classification No Secondary AMS MSC
Video

#### BPS Invariant From Non Archimedean Integrals

Abstract

Moduli spaces of (meromorphic) Higgs bundles and moduli spaces of one dimensional sheaves on surfaces with positive (or trivial) anti-canonical  bundle can be interpreted as moduli of stable sheaves on non compact CY3 varieties. From this prospective, the so called BPS invariants for these moduli spaces have an interpretation in terms of curve counting on the CY3. This in turn imply that certain relations among the BPS invariants are to be expected.
Extending the framework of Batyrev’s Theorem, we work over a non Archimedean field F and define a natural measure on the F-points of such moduli spaces.

We then prove that the integral of a naturally defined function on the moduli space (with respect to the constructed measure) is independent of the Euler characteristic. This independence is the expected property for BPS invariants.

This is a joint work with Giulio Orecchia and Dimitri Wyss.