Seminar detail: Non-invertible symmetry in 3+1-dimensions

Date&Time	Mon May 30 2022 (11:00 - 12:00)
Speaker	Kantaro Ohmori
Affiliation	University of Tokyo
Title	Non-invertible symmetry in 3+1-dimensions
Abstract	Non-invertible symmetry is a generalization of symmetry in QFT, which allows operations violating unitarity like measurements. Although this concept has been know in 1+1-dimensional QFTs for a few decades, a systematic construction of examples in 3+1-dimensional QFTs was found last year and it has become an active area of research. In this talk I will give an overview about non-invertible symmetries, and then will explain how a symmetric broken by abelian ABJ anomaly can be seen an unbroken non-invertible symmetry, together with potential applications.
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