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arxiv: 1407.8028 · v2 · pith:4XCEHCSHnew · submitted 2014-07-30 · 🌀 gr-qc

The trivial solution of the gravitational energy-momentum tensor problem

classification 🌀 gr-qc
keywords energy-momentumgravitationaltensoreinsteinonlypeculiaritiestrivialargue
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In the literature one often finds the claim that there is no such thing as an energy-momentum tensor for the gravitational field, and consequently, that the total energy-momentum conservation can only be defined in terms of a gravitational energy-momentum pseudo-tensor. Nevertheless, by relaxing the assumption that gravitational energy-momentum tensor should only depend on first derivatives of the metric, the Einstein equation leads to a trivial result that gravitational energy-momentum tensor is essentially the Einstein tensor. We discuss various peculiarities of such a definition of energy-momentum are argue that all these peculiarities have a sensible physical interpretation.

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