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Curvature bounce in general relativity: background and primordial spectrum

Authors
  • Renevey, Cyril
  • Barrau, Aurélien
  • Martineau, Killian
  • Touati, Selim
Publication Date
Nov 10, 2020
Source
HAL-INRIA
Keywords
Language
English
License
Unknown
External links

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.

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