Phys. Rev. Lett. 83, 1897–1901 (1999)Pseudotensors and Quasilocal Energy-MomentumReceived 4 September 1998; published in the issue dated 6 September 1999 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. © 1999 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.83.1897
DOI:
10.1103/PhysRevLett.83.1897
PACS:
04.20.Cv, 04.20.Fy
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