Quasilocal gravitational energy
نویسندگان
چکیده
منابع مشابه
Quasilocal gravitational energy.
Abstract. A dynamically preferred quasi-local definition of gravitational energy is given in terms of the Hamiltonian of a ‘2+2’ formulation of general relativity. The energy is well-defined for any compact orientable spatial 2-surface, and depends on the fundamental forms only. The energy is zero for any surface in flat spacetime, and reduces to the Hawking mass in the absence of shear and twi...
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There have been many attempts to define quasilocal energy/mass for a spacelike 2-surface in a spacetime by the Hamilton–Jacobi method. The main difficulty in this approach is the subtle choice of the background configuration to be subtracted from the physical Hamiltonian. Quasilocal mass should be positive for general surfaces, but on the other hand should be zero for surfaces in the flat space...
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The quasilocal energy of gravitational and matter fields in a spatially bounded region is obtained by employing a Hamilton–Jacobi analysis of the action functional. First, a surface stress–energy–momentum tensor is defined by the functional derivative of the action with respect to the three–metric on B, the history of the system’s boundary. Energy density, momentum density, and spatial stress a...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 1994
ISSN: 0556-2821
DOI: 10.1103/physrevd.49.831