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

Sean Gryb; Karim P.Y. Thébault

doi:10.1016/j.physletb.2018.08.013

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

Department of Philosophy

Research output: Contribution to journal › Article (Academic Journal) › peer-review

16 Citations (Scopus)

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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 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 language	English
Pages (from-to)	324-329
Number of pages	6
Journal	Physics Letters B
Volume	784
Early online date	11 Aug 2018
DOIs	https://doi.org/10.1016/j.physletb.2018.08.013
Publication status	Published - 10 Sept 2018

Research Groups and Themes

Centre for Science and Philosophy

Keywords

Problem of time
Quantum cosmology
Singularity resolution

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title = "Superpositions of the cosmological constant allow for singularity resolution and unitary evolution in quantum cosmology",

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.",

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AU - Gryb, Sean

AU - Thébault, Karim P.Y.

PY - 2018/9/10

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N2 - 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.

AB - 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.

KW - Problem of time

KW - Quantum cosmology

KW - Singularity resolution

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U2 - 10.1016/j.physletb.2018.08.013

DO - 10.1016/j.physletb.2018.08.013

M3 - Article (Academic Journal)

AN - SCOPUS:85052121605

SN - 0370-2693

VL - 784

SP - 324

EP - 329

JO - Physics Letters B

JF - Physics Letters B

ER -

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

Abstract

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Analogue Simulation in Modern Physics

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

Abstract

Research Groups and Themes

Keywords

Access to Document

Handle.net

Other files and links

Fingerprint

Projects

Analogue Simulation in Modern Physics

Cite this