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

Research output: Contribution to journalArticle

Original languageEnglish
Pages (from-to)324-329
Number of pages6
JournalPhysics Letters B
Early online date11 Aug 2018
DateAccepted/In press - 9 Aug 2018
DateE-pub ahead of print - 11 Aug 2018
DatePublished (current) - 10 Sep 2018


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.

    Structured keywords

  • Centre for Science and Philosophy

    Research areas

  • Problem of time, Quantum cosmology, Singularity resolution

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    Licence: CC BY


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