Graviton to Photon Conversion via Parametric Resonance
General Relativity and Quantum Cosmology
2023-03-29 v3 Cosmology and Nongalactic Astrophysics
Abstract
We study the parametric resonance excitation of the electromagnetic field by a gravitational wave. We show that there is narrow band resonance. For an electromagnetic field in the vacuum the resonance occurs only in the second band, and its strength is thus suppressed by two powers of amplitude of the gravitational wave. On the other hand, in the case of an electromagnetic field in a medium with the speed of light smaller than 1 (in natural units), there is a band of Fourier modes which undergo resonance in the first band.
Cite
@article{arxiv.2205.08767,
title = {Graviton to Photon Conversion via Parametric Resonance},
author = {Robert Brandenberger and Paola C. M. Delgado and Alexander Ganz and Chunshan Lin},
journal= {arXiv preprint arXiv:2205.08767},
year = {2023}
}
Comments
7 pages, 2 figures; v2 remarks added; v3 version accepted by Physics of the Dark Universe