演講公告
新聞標題: ( 2022-11-11 )
演講主題:Supertranslation invariance of angular momentum
主講人:王業凱教授 (國立陽明交通大學 應用數學系)
演講日期:2022年11月22日(二) 14:00 - 15:00
演講地點:(光復校區) 科學一館223室
摘要內容:
Abstract
LIGO's successful detection of gravitational waves has revitalized the theoretical understanding of the angular momentum carried away by gravitational radiation. An infinite-dimensional "supertranslation ambiguity" has presented an essential difficulty for studying angular momentum at null infinity. In this talk, we will present a definition of angular momentum in general relativity that is supertranslation invariant. The new definition of angular momentum is derived from the limit of the Chen-Wang-Yau quasilocal angular momentum. The talk is based on joint work with Po-Ning Chen, Jordan Keller, Mu-Tao Wang and Shing-Tung Yau.
相關檔案:Talk_1111122.pdf
