Please note that the list below only shows forthcoming events, which may not include regular events that have not yet been entered for the forthcoming term. Please see the past events page for a list of all seminar series that the department has on offer.

 

Past events in this series


Fri, 13 Feb 2026
12:00
L5

Infinite Dimensional Symmetry in Topological-Holomorphic QFTs

Dr Joaquin Liniado
(Edinburgh)
Abstract
In recent years, lower-dimensional quantum field theories have often been understood as descending from higher-dimensional topological-holomorphic gauge theories, with their algebraic and geometric structures thereby becoming manifest. This perspective has led to substantial progress in the study of two-dimensional integrable field theories, four-dimensional integrable systems, and, more recently, celestial holography. In this talk, we present a new instance of this mechanism starting from a five-dimensional holomorphic BF theory. We show how it gives rise to a three-dimensional QFT, whose symmetries are naturally organized into a shifted Poisson vertex algebra. Such structures appear ubiquitously in holomorphic–topological twists of three-dimensional N=2 supersymmetric field theories. We conclude with some remarks on how this construction may be framed within the context of twisted holography.