paper

Gravitational waves emitted by a particle rotating around a Schwarzschild black hole: A semiclassical approach

arXiv:1703.10648 · doi:10.1103/PhysRevD.95.064042

Abstract

We analyze the gravitational radiation emitted from a particle in circular motion around a Schwarzschild black hole using the framework of quantum field theory in curved spacetime at tree level. The gravitational perturbations are written in a gauge-invariant formalism for spherically symmetric spacetimes. We discuss the results, comparing them to the radiation emitted by a particle when it is assumed to be orbiting a massive object due to a Newtonian force in flat spacetime.

13 pages, REVTeX, 10 figures

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