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arxiv: 0903.0631 · v2 · submitted 2009-03-03 · 🌌 astro-ph.CO · gr-qc· hep-ph· hep-th

Non-Gaussianity in a Matter Bounce

Yi-Fu Cai , Wei Xue , Robert Brandenberger , Xinmin Zhang This is my paper
classification 🌌 astro-ph.CO gr-qchep-phhep-th
keywords fluctuationsadiabaticallowalternativebouncebouncingcontractingcosmological
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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.

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