The Chiral Algebra of Genus-Two Class S Theory

2020/12/03 木 10:30 - 12:00
Takahiro Nishinaka
Ritsumeikan University

Vertex operator algebras (VOAs) of class S are those closely related to four-dimensional N=2 superconformal field theories in physics, and give an interesting functor from the category of 2-bordisms to a category of VOAs. In particular, gluing two bordisms corresponds to a certain BRST reduction of VOAs. VOAs in this category are generally associated with a semi-simple Lie algebra and a 2-manifold. In this talk, I will discuss the one associated with sl(2) and genus-two manifold without boundary, arguing that its automorphism group contains an SU(2) sub-group which is unexpected even from physics.


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passcode: モンスター群の非自明な複素数体上の既約表現の最小次元