Bouncing and cyclic quantum primordial universes and the ordering problem
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 equatio...
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| Main Authors: | , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
24 April 2020
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| In: |
Classical and quantum gravity
Year: 2020, Volume: 37, Issue: 10 |
| ISSN: | 1361-6382 |
| DOI: | 10.1088/1361-6382/ab8354 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1088/1361-6382/ab8354
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| Author Notes: | Isaac Torres, Júlio C. Fabris, Oliver F. Piattella |
| Summary: | 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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| Item Description: | Gesehen am 03.06.2020 |
| Physical Description: | Online Resource |
| ISSN: | 1361-6382 |
| DOI: | 10.1088/1361-6382/ab8354 |