Colloquium

Speaker: Professor Mu-Tao Wang (Columbia University and National Taiwan University)
Title: Conserved quantities in general relativity
Time: 2011-09-22 (Thu.)  15:00 - 16:00
Place: Auditorium, 6 Floor, Institute of Mathematics (NTU Campus)
Abstract: Einstein's equivalence principle implies there is no energy density for gravitation. However, in presence of asymptotic symmetry, conserved quantities such as energy, linear momentum, mass, and angular momentum can be defined for an isolated gravitating system. Each of them is expressed as a flux integral at spatial infinity. In this talk, I shall discuss these notions and quasilocal versions of them from a geometric perspective.
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