A characteristic signature of fourth order gravity

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We present for the first time the complete matter power spectrum for $R^n$ gravity which has been derived from the fourth order scalar perturbation equations. This leads to the discovery of a characteristic signature of fourth order gravity in the matter power spectrum, the details of which have not seen before in other studies in this area and therefore provides a crucial test for fourth order gravity on cosmological scales.
4 pages and 3 figures

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Astrophysics, General Relativity and Quantum Cosmology

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http://salesiana.dossiersoluciones.com/handle/123456789/210374

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0812.2028
 http://arxiv.org/abs/0812.2028

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arXiv