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Singularity avoidance in Bianchi I quantum cosmology

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arxiv 1903.04391 v3 pith:6PVRWCA6 submitted 2019-03-11 gr-qc hep-th

Claus Kiefer , Nick Kwidzinski , Dennis Piontek This is my paper · ORCID
classification gr-qchep-th
keywords modelsavoidancebianchiquantumsingularityanisotropicavoidedclass
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We extend recent discussions of singularity avoidance in quantum gravity from isotropic to anisotropic cosmological models. The investigation is done in the framework of quantum geometrodynamics (Wheeler-DeWitt equation). We formulate criteria of singularity avoidance for general Bianchi class A models and give explicit and detailed results for Bianchi I models with and without matter. We find that the classical singularities can generally be avoided in these models.

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  1. Unitary quantum matter-bounce in a universe with a positive cosmological constant

    gr-qc 2025-05 conditional novelty 6.0 of 10

    Quantizing a dust-filled universe with positive cosmological constant yields a unitary wave packet whose expectation value bounces, avoiding the classical Big Bang singularity.

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