Higher-order gravity and the cosmological background of gravitational waves

Details Higher-order gravity and the cosmological background of gravitational waves Higher-order gravity and the cosmological background of gravitational waves

2007-12-18

arxiv.org/abs/0712.2980v1

Astropart.Phys.29:125-129,2008

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

6 pages, 8 figures

Scientific paper

10.1016/j.astropartphys.2007.12.

The cosmological background of gravitational waves can be tuned by the higher-order corrections to the gravitational Lagrangian. In particular, it can be shown that assuming $R^{1+\epsilon}$, where $\epsilon$ indicates a generic (eventually small) correction to the Hilbert-Einstein action in the Ricci scalar $R$, gives a parametric approach to control the evolution and the production mechanism of gravitational waves in the early Universe.

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