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Bouncing unitary cosmology II. Mini-superspace phenomenology: Mini-Superspace Phenomenology

Research output: Contribution to journalArticle

Original languageEnglish
Article number035010
Number of pages20
JournalClassical and Quantum Gravity
Volume36
Issue number3
Early online date18 Jan 2019
DOIs
DateAccepted/In press - 12 Dec 2018
DateE-pub ahead of print - 18 Jan 2019
DatePublished (current) - 18 Jan 2019

Abstract

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.

    Research areas

  • bouncing cosmology, cosmological constant, problem of time, quantum cosmology, singularity resolution

    Structured keywords

  • Centre for Science and Philosophy

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  • Full-text PDF (accepted author manuscript)

    Rights statement: This is the accepted author manuscript (AAM). The final published version (version of record) is available online via IOP at https://doi.org/10.1088/1361-6382/aaf837 . Please refer to any applicable terms of use of the publisher.

    Accepted author manuscript, 6 MB, PDF document

    Embargo ends: 18/01/20

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    Licence: CC BY-NC-ND

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