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  Gravitational self force and gauge transformations

Barack, L., & Ori, A. (2001). Gravitational self force and gauge transformations. Physical Review D, 64, 124003.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-562F-3 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-5630-E
Genre: Journal Article

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2749.pdf (Publisher version), 151KB
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 Creators:
Barack, Leor1, Author
Ori, Amos, Author
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1Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, escidoc:24013              

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 Abstract: We explore how the gravitational self force (or ''''radiation reaction'' force), acting on a pointlike test particle in curved spacetime, is modified in a gauge transformation. We derive the general transformation law, describing the change in the self force in terms of the infinitesimal displacement vector associated with the gauge transformation. Based on this transformation law, we extend the regularization prescription by Mino et al. and Quinn and Wald (originally formulated within the harmonic gauge) to an arbitrary gauge. Then we extend the method of mode-sum regularization (which provides a practical means for calculating the regularized self force and was recently applied to the harmonic-gauge gravitational self force) to an arbitrary gauge. We find that the regularization parameters involved in this method are gauge-independent. We also explore the gauge transformation of the self force from the harmonic gauge to the Regge-Wheeler gauge and to the radiation gauge, focusing attention on the regularity of these gauge transformations. We conclude that the transformation of the self force to the Regge-Wheeler gauge in Schwarzschild spacetime is regular for radial orbits and irregular otherwise, whereas the transformation to the radiation gauge is irregular for all orbits.

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Language(s): eng - English
 Dates: 2001
 Publication Status: Published in print
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 Identifiers: eDoc: 2749
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Title: Physical Review D
Source Genre: Journal
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Pages: - Volume / Issue: 64 Sequence Number: - Start / End Page: 124003 Identifier: -