The physical significance of the Babak-Grishchuk gravitational energy-momentum tensor

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dc.creatorButcher, Luke M.
dc.creatorLasenby, Anthony
dc.creatorHobson, Michael
dc.date2008-07-01
dc.date2008-07-15
dc.date.accessioned2026-07-07T12:44:40Z
dc.date.available2026-07-07T12:44:40Z
dc.descriptionWe examine the claim of Babak and Grishchuk [1] to have solved the problem of localising the energy and momentum of the gravitational field. After summarising Grishchuk's flat-space formulation of gravity, we demonstrate its equivalence to General Relativity at the level of the action. Two important transformations are described (diffeomorphisms applied to all fields, and diffeomorphisms applied to the flat-space metric alone) and we argue that both should be considered gauge transformations: they alter the mathematical representation of a physical system, but not the system itself. By examining the transformation properties of the Babak-Grishchuk gravitational energy-momentum tensor under these gauge transformations (infinitesimal and finite) we conclude that this object has no physical significance.
dc.description10 pages. Submitted to Phys. Rev. D; acknowledgements adjusted
dc.identifierhttps://arxiv.org/abs/0807.0112
dc.identifierhttp://arxiv.org/abs/0807.0112
dc.identifierPhys.Rev.D78:064034,2008
dc.identifierdoi:10.1103/PhysRevD.78.064034
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/220848
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectAstrophysics
dc.titleThe physical significance of the Babak-Grishchuk gravitational energy-momentum tensor
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