Non-Gaussianity in a Matter Bounce
arXiv:0903.0631 · doi:10.1088/1475-7516/2009/05/011
Abstract
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
References in corpus (7)
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- Non-perturbative Gravity, Hagedorn Bounce & CMB
- Cosmology without inflation
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Cited by in corpus (6)
- Harrison--Zeldovich spectrum from conformal invariance
- Evolution of Metric Perturbations in Quintom Bounce model
- Primordial perturbation with a modified dispersion relation
- Thermal Fluctuations and Bouncing Cosmologies
- Primordial Trispectrum from Entropy Perturbations in Multifield DBI Model
- Processing of Cosmological Perturbations in a Cyclic Cosmology