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arXiv · 1911.01487

Bouncing and Cyclic Quantum Primordial Universes and the Ordering Problem

Isaac Torres·Júlio César Fabris·Oliver Fabio Piattella
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Abstract

In a Bohmian quantum cosmology scenario, we investigate some quantum effects on the evolution of the primordial universe arising from the adoption of an alternative non-trivial ordering to the quantization of the constrained Hamiltonian of a minimally coupled scalar field. The Wheeler-DeWitt equation has a contribution from the change in factor ordering, hence there are new quantum effects. We compare the results between the non-trivial and the trivial ordering cases, showing that the classical limit is valid for both orderings, but new bouncing and cyclic solutions are present in the non-trivial case. Additionally, we show that the non-singular solutions already present in the trivial ordering formalism keep valid.

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Isaac Torres, Júlio César Fabris, Oliver Fabio Piattella. 2019-11-04. Bouncing and Cyclic Quantum Primordial Universes and the Ordering Problem. https://doi.org/10.1088/1361-6382%2Fab8354

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