Parametric excitation of plasma waves by gravitational radiation

Details Parametric excitation of plasma waves by gravitational radiation Parametric excitation of plasma waves by gravitational radiation

1998-10-08

arxiv.org/abs/astro-ph/9810128v1

Phys.Rev.Lett. 82 (1999) 3012-3015

Astronomy and Astrophysics

Astrophysics

5 pages, REVTeX

Scientific paper

10.1103/PhysRevLett.82.3012

We consider the parametric excitation of a Langmuir wave and an electromagnetic wave by gravitational radiation, in a thin plasma on a Minkowski background. We calculate the coupling coefficients starting from a kinetic description, and the growth rate of the instability is found. The Manley-Rowe relations are fulfilled only in the limit of a cold plasma. As a consequence, it is generally difficult to view the process quantum mechanically, i.e. as the decay of a graviton into a photon and a plasmon. Finally we discuss the relevance of our investigation to realistic physical situations.

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