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arXiv · 1904.09244

Elimination of cosmological singularities in quantum cosmology by suitable operator orderings

Thibaut Demaerel·Ward Struyve
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Abstract

Canonical quantization of general relativity does not yield a unique quantum theory for gravity. This is in part due to operator ordering ambiguities. In this paper, we investigate the role of different operator orderings on the question of whether a big bang or big crunch singularity occurs. We do this in the context of the minisuperspace model of a Friedmann-Lemaitre-Robertson-Walker universe with Brown-Kuchar dust. We find that for a certain class of operator orderings such a singularity is eliminated without having to impose boundary conditions.

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Thibaut Demaerel, Ward Struyve. 2019-08-15. Elimination of cosmological singularities in quantum cosmology by suitable operator orderings. https://doi.org/10.1103/physrevd.100.046008

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