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arXiv · 0712.2980

Higher-order gravity and the cosmological background of gravitational waves

S. Capozziello·M. De Laurentis·M. Francaviglia
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Abstract

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 $R^{1+ε}$, where $ε$ 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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S. Capozziello, M. De Laurentis, M. Francaviglia. 2007-12-18. Higher-order gravity and the cosmological background of gravitational waves. https://doi.org/10.1016/j.astropartphys.2007.12.001

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