Non-Gaussianity in a Matter Bounce

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A nonsingular bouncing cosmology in which the scales of interest today exit the Hubble radius in a matter-dominated contracting phase yields an alternative to inflation for producing a scale-invariant spectrum of adiabatic cosmological fluctuations. In this paper we identify signatures in the non-Gaussianities of the fluctuations which are specific to this scenario and allow it to be distinguished from the results of inflationary models.
10 pages, 6 figures, 2 references added

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Cosmology and Nongalactic Astrophysics, General Relativity and Quantum Cosmology, High Energy Physics - Phenomenology, High Energy Physics - Theory

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http://salesiana.dossiersoluciones.com/handle/123456789/230869

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0903.0631
 http://arxiv.org/abs/0903.0631
 JCAP 0905:011,2009
 doi:10.1088/1475-7516/2009/05/011

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arXiv