Curvature bounce in general relativity: Background and primordial spectrum
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2021-01
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Journal Article
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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. © 2021 IOP Publishing
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published
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2021 (1)
Pages / Article No.
18
Publisher
IOP Publishing
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Subject
alternatives to inflation; CMBR theory; physics of the early universe