Gauge problem in the gravitational self-force: Harmonic gauge approach in the Schwarzschild background

Norichika Sago, Hiroyuki Nakano, Misao Sasaki

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

The metric perturbation induced by a particle in the Schwarzschild background is usually calculated in the Regge-Wheeler (RW) gauge, whereas the gravitational self-force is known to be given by the tail part of the metric perturbation in the harmonic gauge. Thus, to identify the gravitational self-force correctly in a specified gauge, it is necessary to find out a gauge transformation that connects these two gauges. This is called the gauge problem. As a direct approach to solve the gauge problem, we formulate a method to calculate the metric perturbation in the harmonic gauge on the Schwarzschild background. We apply the Fourier-harmonic expansion to the metric perturbation and reduce the problem to the gauge transformation of the Fourier-harmonic coefficients (radial functions) from the RW gauge to the harmonic gauge. We derive a set of decoupled radial equations for the gauge transformation. These equations are found to have a simple second-order form for the odd parity part and the forms of spin s = 0 and 1 Teukolsky equations for the even parity part. As a by-product, we correct typographical errors in Zerilli's paper and present a set of corrected equations in Appendix A.

Original languageEnglish
Article number104017
JournalPhysical Review D
Volume68
Issue number10
DOIs
Publication statusPublished - Dec 1 2003
Externally publishedYes

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harmonics
perturbation
parity
expansion
coefficients

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

Cite this

Gauge problem in the gravitational self-force : Harmonic gauge approach in the Schwarzschild background. / Sago, Norichika; Nakano, Hiroyuki; Sasaki, Misao.

In: Physical Review D, Vol. 68, No. 10, 104017, 01.12.2003.

Research output: Contribution to journalArticle

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