IAS CMT/QFT Group Meeting

Lattice Realization of Topological Defects in 2D Conformal Field Theories (CFTs)

Abstract: Topological defect lines in 2D CFTs have found resurgence in the context of categorical symmetries. In this talk, I will present the lattice realization of these for unitary Minimal Models. I will use Spin chains, such as Transverse Field Ising and Three-State Potts Model, and Integrable Restricted Solid-on-Solid (RSOS) models for these constructions. I will compare known defect line operators in Spin chains, RSOS models, and Anyonic chains. Further, I will discuss the lattice realization of a defect line which was previously unknown.

The talk will be based on 2310.19703 and other works in preparation, done with Ananda Roy, Fei Yan, Hubert Saleur, Linnea Grans-Samuelsson, and Thiago Silva Tavares.

Date & Time

April 22, 2024 | 11:00am – 12:00pm


Bloomberg Lecture Hall (IAS)


Madhav Sinha, Rutgers University