Gravitational waves in preheating

Details Gravitational waves in preheating Gravitational waves in preheating

2000-02-25

arxiv.org/abs/gr-qc/0002089v1

Class.Quant.Grav. 17 (2000) 2875-2884

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

8 pages, 8 figures, Revtex

Scientific paper

10.1088/0264-9381/17/15/303

We study the evolution of gravitational waves through the preheating era that follows inflation. The oscillating inflaton drives parametric resonant growth of scalar field fluctuations, and although super-Hubble tensor modes are not strongly amplified, they do carry an imprint of preheating. This is clearly seen in the Weyl tensor, which provides a covariant description of gravitational waves.

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