Superpositions of the cosmological constant allow for singularity resolution and unitary evolution in quantum cosmology

Sean Gryb*, Karim P.Y. Thébault

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

9 Citations (Scopus)
246 Downloads (Pure)

Abstract

A novel approach to quantization is shown to allow for superpositions of the cosmological constant in isotropic and homogeneous mini-superspace models. Generic solutions featuring such superpositions display unitary evolution and resolution of the classical singularity. Physically well-motivated cosmological solutions are constructed. These particular solutions exhibit characteristic features of a cosmic bounce including universal phenomenology that can be rendered insensitive to Planck-scale physics in a natural manner.

Original languageEnglish
Pages (from-to)324-329
Number of pages6
JournalPhysics Letters B
Volume784
Early online date11 Aug 2018
DOIs
Publication statusPublished - 10 Sep 2018

Structured keywords

  • Centre for Science and Philosophy

Keywords

  • Problem of time
  • Quantum cosmology
  • Singularity resolution

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