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arxiv: 2112.06503 · v2 · pith:Y6U7HDQB · submitted 2021-12-13 · gr-qc · physics.hist-ph

Energy in Newtonian gravity

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classification gr-qc physics.hist-ph
keywords energygravitycompromisefieldnewtoniananalyseappliedargument
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In Newtonian gravity it is a moot question whether energy should be localized in the field or inside matter. An argument from relativity suggests a compromise in which the contribution from the field in vacuum is positive definite. We show that the same compromise is implied by Noether's theorem applied to a variational principle for perfect fluids, if we assume Dirichlet boundary conditions on the potential. We then analyse a thought experiment due to Bondi and McCrea that gives a clean example of inductive energy transfer by gravity. Some history of the problem is included

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