[0908.4363] Elementary development of the gravitational self-force

Authors: Steven Detweiler

Date: 31 Aug 2009

Abstract: The gravitational field of a particle of small mass $\mu$ moving through curved spacetime, with metric $g_{ab}$, is naturally and easily decomposed into two parts each of which satisfies the perturbed Einstein equations through $O(\mu)$. One part is an inhomogeneous field $hˆS_{ab}$ which, near the particle, looks like the Coulomb $\mu/r$ field with tidal distortion from the local Riemann tensor. This singular field is defined in a neighborhood of the small particle and does not depend upon boundary conditions or upon the behavior of the source in either the past or the future. The other part is a homogeneous field $hˆR_{ab}$. In a perturbative analysis, the motion of the particle is then best described as being a geodesic in the metric $g_{ab}+hˆR_{ab}$. This geodesic motion includes all of the effects which might be called radiation reaction and conservative effects as well.

abs pdf

Sep 02, 2009

0908.4363 (/preprints)
2009-09-02, 11:20 [edit]

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