21 citations · 62 across the 5 of their papers we have counts for
6 papers
Quantum superradiance on static black hole space-times
Visakan Balakumar, Rafael P. Bernar, Luis C. B. Crispino +1
We study the quantum analogue of the classical process of superradiance for a massless charged scalar field on a static charged black hole space-time. We show that an "in" vacuum s…
Synchrotron geodesic radiation in Schwarzschild-de Sitter spacetime
João P. B. Brito, Rafael P. Bernar, Luís C. B. Crispino
We analyze the scalar radiation emitted by a source in geodesic circular orbits around a Schwarzschild-de Sitter black hole. We obtain the emitted power using quantum field theory…
Scalar radiation emitted by a source around a spherically symmetric black hole
Rafael Bernar
We analyze the scalar radiation emitted by a source in a circular geodesic orbit around a spherically symmetric black hole. The black hole spacetime considered is quite general, in…
Scalar radiation from a source rotating around a regular black hole
R. P. Bernar, L. C. B. Crispino
The scalar radiation emitted by a source in geodesic circular orbit around a regular Bardeen black hole is analyzed. We use the quantum field theory in curved spacetime framework t…
The Gibbons-Hawking radiation of gravitons in the Poincaré and static patches of de Sitter spacetime
Rafael P. Bernar, Luís C. B. Crispino, Atsushi Higuchi
We discuss the quantization of linearized gravity in the background de Sitter spacetime using a gauge-invariant formalism to write the perturbed gravitational field in the static p…
Gravitational waves emitted by a particle rotating around a Schwarzschild black hole: A semiclassical approach
Rafael P. Bernar, Luís C. B. Crispino, Atsushi Higuchi
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…