Bouncing unitary cosmology II. Mini-superspace phenomenology

Sean Gryb*, Karim P. Y. Thebault

*Bijbehorende auteur voor dit werk

    OnderzoeksoutputAcademicpeer review

    3 Citaten (Scopus)
    8 Downloads (Pure)


    A companion paper provides a proposal for cosmic singularity resolution based upon general features of a bouncing unitary cosmological model in the mini-superspace approximation. This paper analyses novel phenomenology that can be identified within particular solutions of that model. First, we justify our choice of particular solutions based upon a clearly articulated and observationally-motivated principle. Second, we demonstrate that the chosen solutions follow a classical mini-superspace cosmology before smoothly bouncing off the classically singular region. Third, and most significantly, we identify a 'Rayleigh-scattering' limit for physically reasonable choices of parameters within which the solutions display effective behaviour that is insensitive to the details of rapidly oscillating Planck-scale physics. This effective physics is found to be compatible with an effective period of cosmic inflation well below the Planck scale. The detailed effective physics of this Rayleigh-scattering limit is provided via: (i) an exact analytical treatment of the model in the de Sitter limit; and (ii) numerical solutions of the full model.

    Originele taal-2English
    Aantal pagina's33
    TijdschriftClassical and Quantum Gravity
    Nummer van het tijdschrift3
    StatusPublished - 7-feb-2019

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