Pseudotensors and quasilocal energy-momentum

Details Pseudotensors and quasilocal energy-momentum Pseudotensors and quasilocal energy-momentum

1998-09-10

arxiv.org/abs/gr-qc/9809040v2

Phys.Rev.Lett. 83 (1999) 1897-1901

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

LaTeX (REVTex), 4 pages, no figures, revised Title, abstract, introduction and conclusion

Scientific paper

10.1103/PhysRevLett.83.1897

Early energy-momentum investigations for gravitating systems gave reference frame dependent pseudotensors; later the quasilocal idea was developed. Quasilocal energy-momentum can be determined by the Hamiltonian boundary term, which also identifies the variables to be held fixed on the boundary. We show that a pseudotensor corresponds to a Hamiltonian boundary term. Hence they are quasilocal and acceptable; each is the energy-momentum density for a definite physical situation with certain boundary conditions. These conditions are identified for well-known pseudotensors.

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