Non-Gaussianity in a Matter Bounce
Cosmology and Nongalactic Astrophysics
2009-05-21 v2 General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
High Energy Physics - Theory
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.
Cite
@article{arxiv.0903.0631,
title = {Non-Gaussianity in a Matter Bounce},
author = {Yi-Fu Cai and Wei Xue and Robert Brandenberger and Xinmin Zhang},
journal= {arXiv preprint arXiv:0903.0631},
year = {2009}
}
Comments
10 pages, 6 figures, 2 references added