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

Gryb, Sean and Thebault, Karim P Y (2018) Superpositions of the cosmological constant allow for singularity resolution and unitary evolution in quantum cosmology. Physics Letters B.

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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 superposi- tions 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.


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Item Type: Published Article or Volume
Creators:
CreatorsEmailORCID
Gryb, Seans.gryb@hef.ru.nl
Thebault, Karim P Ykarim.thebault@gmail.com
Keywords: quantum cosmology, singularity resolution, problem of time
Subjects: Specific Sciences > Physics > Cosmology
Specific Sciences > Physics > Quantum Gravity
Depositing User: Dr Karim Thebault
Date Deposited: 14 Aug 2018 18:30
Last Modified: 14 Aug 2018 18:30
Item ID: 14939
Journal or Publication Title: Physics Letters B
Publisher: Elsevier
Official URL: https://doi.org/10.1016/j.physletb.2018.08.013
DOI or Unique Handle: 10.1016/j.physletb.2018.08.013
Subjects: Specific Sciences > Physics > Cosmology
Specific Sciences > Physics > Quantum Gravity
Date: 11 August 2018
URI: http://philsci-archive.pitt.edu/id/eprint/14939

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