"BMS algebra from Virasoro algebras", Dr. Hisayoshi Muraki, IBS Center for Geometry and Physics

Date

Tuesday, April 18, 2023 - 14:30

Location

Lab 4, Seminar room L4E01

Description

Visitor Seminar hosted by Quantum Gravity Unit
Speaker: Dr. Hisayoshi Muraki, IBS Center for Geometry and Physics
Title: "BMS algebra from Virasoro algebras"

Abstract: Based on my recent work, I will talk about a way of achieving BMS algebra out of an independent pair of Virasoro algebras. Those algebras appear as asymptotic symmetries of three-dimensional gravity with/without cosmological constant, equivalently asymptotically AdS/flat spacetime. Whereas asymptotically flat spacetime shall be regarded as asymptotically AdS spacetime with taking a limit of vanishing cosmological constant, the procedure involves some subtlety. A similar subtlety is carried over to the algebraic structure, which I will describe in some detail.

 

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