(2024-04-30) Seminar: Fabio Apruzzi -- Aspects of (non-)invertible symmetries from branes: symmetry theories and generalized charges


 Fabio Apruzzi 教授学术报告

Title: Aspects of (non-)invertible symmetries from branes: symmetry theories and generalized charges

Speaker: Fabio Apruzzi

Affiliation: University of Padova, Italy (意大利帕多瓦大学)

Time: 16:00-17:00, Tuesday, 30th April, 2024 (UTC+8, Beijing Time)

Venue: Zoom Meeting (ID: 385 442 0225; Passcode: yauc)

Inviter: Hai Lin(林海)



Recently it has been observed that the string theory branes in geometric engineering and holography have a striking connection with generalized global symmetries. I will explain how branes, in a certain topological limit, not only furnish the symmetry generators, but also encode the so-called Symmetry Topological Field Theory (or SymTFT). For a d-dimensional quantum field theory (QFT), this is a (d+1)-dimensional topological field theory, whose topological defects encode both the symmetry generators (invertible or non-invertible) and the generalized charges. After having introduced the general setup, I will exemplify this for QFT with finite generalized (non-)invertible symmetries. Finally, I will discuss this prescription to non-finite symmetries. In particular, I will discuss the symmetry theory (SymTh) for non-invertible symmetries with transformation parameters in Q/Z, which are the ones that also appear in 4d particle physics.



Fabio Apruzzi is faculty in the Dept. Of Physics and Astronomy at the University of Padova, Italy. He received Ph.D. from Leibniz Universitat Hannover in 2015 and graduated at the University of Milano Bicocca in 2012. Fabio Apruzzi works on a number of topics in string theory, supergravity, quantum field theory, holography and on generalized symmetries and related aspects.


The seminar will be broadcasted online by Zoom.

Interested people are free to join, without registration in advance.

The Zoom info is


Meeting ID: 385 442 0225

Passcode: yauc