Parametric Resonance in an Expanding Universe

Details Parametric Resonance in an Expanding Universe Parametric Resonance in an Expanding Universe

1997-09-01

arxiv.org/abs/astro-ph/9709006v1

Phys.Rev.D57:2152-2157,1998

Astronomy and Astrophysics

Astrophysics

18 pages, Latex, 4 figures

Scientific paper

10.1103/PhysRevD.57.2152

Parametric resonance has been discussed as a mechanism for copious particle production following inflation. Here we present a simple and intuitive calculational method for estimating the efficiency of parametric amplification as a function of parameters. This is important for determining whether resonant amplification plays an important role in the reheating process. We find that significant amplification occurs only for a limited range of couplings and interactions.

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