Curvature bounce in general relativity: background and primordial spectrum

Aur\'elien Barrau; Cyril Renevey; Killian Martineau; Selim Touati

Curvature bounce in general relativity: background and primordial spectrum

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arxiv 2010.13542 v2 pith:N5UGOHF2 submitted 2020-10-26 gr-qc astro-ph.COhep-ph

Cyril Renevey , Aurélien Barrau , Killian Martineau , Selim Touati This is my paper · ORCID

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keywords backgroundbouncecurvatureevolutiongeneralprimordialspectrumbang

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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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Non-singular bounce solutions in Myrzakulov $f(R,T)$ gravity
gr-qc 2025-01 reject novelty 4.0 of 10

In Myrzakulov F(R,T) gravity, free connection functions can be chosen to produce matter-bounce backgrounds with a scale-invariant scalar power spectrum.

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