Phys. Rev. Lett. 84, 4529–4532 (2000)Self-Force on a Particle in Orbit around a Black HoleReceived 11 November 1999; published in the issue dated 15 May 2000 We study the self-force acting on a scalar charge in uniform circular motion around a Schwarzschild black hole. The analysis is based on a direct calculation of the self-force via mode decomposition, and on a regularization procedure based on Ori's mode-sum regularization prescription. We find the four self-forces at arbitrary radii and angular velocities (both geodesic and nongeodesic), in particular near the black hole, where general-relativistic effects are strongest, and for fast motion. We find the radial component of the self-force to be repulsive or attractive, depending on the orbit. © 2000 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.84.4529
DOI:
10.1103/PhysRevLett.84.4529
PACS:
04.25.-g, 04.30.Db, 04.70.Bw
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