Gravitational energy in Newtonian Gravity: A response to Dewar and Weatherall

The paper investigates the status of gravitational energy in Newtonian Gravity (NG), developing upon recent work by Dewar and Weatherall. The latter suggest that gravitational energy is a gauge quantity. This is potentially misleading: its gauge status crucially depends on the spacetime setting one...

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Main Authors: Dürr, P, Read, J
Format: Journal article
Udgivet: Springer US 2019
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author Dürr, P
Read, J
author_facet Dürr, P
Read, J
author_sort Dürr, P
collection OXFORD
description The paper investigates the status of gravitational energy in Newtonian Gravity (NG), developing upon recent work by Dewar and Weatherall. The latter suggest that gravitational energy is a gauge quantity. This is potentially misleading: its gauge status crucially depends on the spacetime setting one adopts. In line with Møller-Nielsen’s plea for a motivational approach to symmetries, we supplement Dewar and Weatherall’s work by discussing gravitational energy–stress in Newtonian spacetime, Galilean spacetime, Maxwell-Huygens spacetime, and Newton–Cartan Theory (NCT). Although we ultimately concur with Dewar and Weatherall that the notion of gravitational energy is problematic in NCT, our analysis goes beyond their work. The absence of an explicit definition of gravitational energy–stress in NCT somewhat detracts from the force of Dewar and Weatherall’s argument. We fill this gap by examining the supposed gauge status of prima facie plausible candidates—NCT analogues of gravitational energy–stress pseudotensors, the Komar mass, and the Bel-Robinson tensor. Our paper further strengthens Dewar and Weatherall’s results. In addition, it sheds more light upon the subtle link between sufficiently rich inertial structure and the definability of gravitational energy in NG.
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spelling oxford-uuid:b6f3b5e9-84e4-45fe-8dd6-ae2ba4afd4ac2022-03-27T04:44:51ZGravitational energy in Newtonian Gravity: A response to Dewar and WeatherallJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:b6f3b5e9-84e4-45fe-8dd6-ae2ba4afd4acSymplectic Elements at OxfordSpringer US2019Dürr, PRead, JThe paper investigates the status of gravitational energy in Newtonian Gravity (NG), developing upon recent work by Dewar and Weatherall. The latter suggest that gravitational energy is a gauge quantity. This is potentially misleading: its gauge status crucially depends on the spacetime setting one adopts. In line with Møller-Nielsen’s plea for a motivational approach to symmetries, we supplement Dewar and Weatherall’s work by discussing gravitational energy–stress in Newtonian spacetime, Galilean spacetime, Maxwell-Huygens spacetime, and Newton–Cartan Theory (NCT). Although we ultimately concur with Dewar and Weatherall that the notion of gravitational energy is problematic in NCT, our analysis goes beyond their work. The absence of an explicit definition of gravitational energy–stress in NCT somewhat detracts from the force of Dewar and Weatherall’s argument. We fill this gap by examining the supposed gauge status of prima facie plausible candidates—NCT analogues of gravitational energy–stress pseudotensors, the Komar mass, and the Bel-Robinson tensor. Our paper further strengthens Dewar and Weatherall’s results. In addition, it sheds more light upon the subtle link between sufficiently rich inertial structure and the definability of gravitational energy in NG.
spellingShingle Dürr, P
Read, J
Gravitational energy in Newtonian Gravity: A response to Dewar and Weatherall
title Gravitational energy in Newtonian Gravity: A response to Dewar and Weatherall
title_full Gravitational energy in Newtonian Gravity: A response to Dewar and Weatherall
title_fullStr Gravitational energy in Newtonian Gravity: A response to Dewar and Weatherall
title_full_unstemmed Gravitational energy in Newtonian Gravity: A response to Dewar and Weatherall
title_short Gravitational energy in Newtonian Gravity: A response to Dewar and Weatherall
title_sort gravitational energy in newtonian gravity a response to dewar and weatherall
work_keys_str_mv AT durrp gravitationalenergyinnewtoniangravityaresponsetodewarandweatherall
AT readj gravitationalenergyinnewtoniangravityaresponsetodewarandweatherall