Curvature bounce in general relativity: background and primordial spectrum
General Relativity and Quantum Cosmology
2021-01-20 v2 Cosmology and Nongalactic Astrophysics
High Energy Physics - Phenomenology
Abstract
Recent data suggest that the Universe could be positively curved. Combined with an inflationary stage, this might lead to a curvature bounce instead of the Big Bang. The background evolution is presented, as a function of the parameters controlling the cosmic evolution. The primordial tensor spectrum is also calculated and possible observational footprints of the model are underlined. Several potentials are considered and general remarks are made about "naturalness" in this context.
Keywords
Cite
@article{arxiv.2010.13542,
title = {Curvature bounce in general relativity: background and primordial spectrum},
author = {Cyril Renevey and Aurélien Barrau and Killian Martineau and Selim Touati},
journal= {arXiv preprint arXiv:2010.13542},
year = {2021}
}
Comments
8 pages, 8 figures