Radiation-reaction force on a particle plunging into a black hole

Details Radiation-reaction force on a particle plunging into a black hole Radiation-reaction force on a particle plunging into a black hole

2000-07-15

arxiv.org/abs/gr-qc/0007033v1

Phys.Rev. D62 (2000) 084040

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

4 pages, 4 Encapsulated PostScript figures, RevTeX, submitted to Phys. Rev. D

Scientific paper

10.1103/PhysRevD.62.084040

We calculate the self force acting on a scalar particle which is falling radially into a Schwarzschild black hole. We treat the particle's self-field as a linear perturbation over the fixed Schwarzschild background. The force is calculated by numerically solving the appropriate wave equation for each mode of the field in the time domain, calculating its contribution to the self force, and summing over all modes using Ori's mode-sum regularization prescription. The radial component of the force is attractive at large distances, and becomes repulsive as the particle approaches the event horizon.

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