Localizing the energy and momentum of linear gravity

L. M. Butcher*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Although there is little doubt that gravitational waves exist and carry energy as they propagate, it has been notoriously difficult to explain where in spacetime this energy resides. We have summarized a new approach to the localization of gravitational energy-momentum, valid within the linear approximation to general relativity. Built around a local description of the exchange of energy-momentum between matter and linear gravity, the framework defines a unique symmetric gravitational energy-momentum tensor, free of second derivatives, and motivates a natural gauge-fixing programme, which renders the description unambiguous. Once the gauge has been fixed according to this programme, the gravitational energy-momentum tensor obeys the dominant energy condition: gravitational energy-density is never negative, and gravitational energy-flux is never spacelike.

Original languageEnglish
Title of host publicationVISHWA MIMANSA: AN INTERPRETATIVE EXPOSITION OF THE UNIVERSE. PROCEEDINGS OF THE 7TH INTERNATIONAL CONFERENCE ON GRAVITATION AND COSMOLOGY
EditorsBS Sathyaprakash, TP Singh
Place of PublicationBRISTOL
PublisherIOP Publishing Ltd.
Number of pages4
DOIs
Publication statusPublished - 2014
Event7th International Conference on Gravitation and Cosmology (ICGC) - , India
Duration: 14 Dec 201119 Dec 2011

Publication series

NameJournal of Physics Conference Series
PublisherIOP PUBLISHING LTD
Volume484
ISSN (Print)1742-6588

Conference

Conference7th International Conference on Gravitation and Cosmology (ICGC)
Country/TerritoryIndia
Period14/12/1119/12/11

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