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Семинар Лаборатории алгебраической геометрии и ее приложений
21 августа 2012 г. 17:00, г. Москва, ул. Вавилова, 7
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[Quasi-local mass and momentum in general relativity]
С.-Т. Яу
Гарвардский университет
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Аннотация:
There have been many attempts to define the notion of quasilocal mass for a spacelike 2-surface in spacetime by the Hamilton-Jacobi analysis. The essential difficulty in this approach is to identify the right choice of the background configuration to be subtracted from the physical Hamiltonian. Quasilocal mass should be nonnegative for surfaces in general spacetime and zero for surfaces in flat spacetime. In the talk a new definition of gauge-independent quasilocal mass will be given with a proof that it has the desired properties.
Язык доклада: английский
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