Twisted Fibrations in M/F-theory

Time：2023-09-19 Tue 21:30-22:30

Venue：ZOOM: 388 528 9728（PW: BIMSA）

Organizer：Juntao Wang

Speaker：aul Oehlmann Northeastern University

Abstract

Geometric Engineering is an important tool to construct a large class of non-Lagrangian theories in various dimensions. If a gauge algebra admits discrete automorphisms, there is the possibility to twist by them when performing a circle reduction. Since F-theory is related to M-theory by a circle reduction, and M-theory is sensitive to the full geometry, this begs the question which geometries capture such twisted gauge algebras. In this talk I will argue that so called genus-one fibrations are the key ingredient to engineer twisted algebras in five dimensions. I use the algebraic description of the threefold to compute multiplicities of BPS states, perform geometric transitions to untwisted algebras and outline further applications if time permits.

DATESeptember 19, 2023

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