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General Relativity and Gravitation
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Preprint . 2008
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General Relativity and Gravitation
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https://dx.doi.org/10.48550/ar...
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Nonlinear quantum cosmology

descriptionPublicationkeyboard_double_arrow_right Article , Preprint , Other literature type 10 Mar 2009Embargo end date: 01 Jan 2008 Singapore English Publisher:Springer Science and Business Media LLCJournal:General Relativity and Gravitation, volume 41, pages 2,543-2,560 (issn: 0001-7701, eissn: 1572-9532, Copyright policy )
Authors: Nguyen, L.-H.; Parwani, R.R.;

doi: 10.1007/s10714-009-0779-9 , 10.48550/arxiv.0805.4294

arXiv: 0805.4294

Nonlinear quantum cosmology

Abstract

We study the effects of an information-theoretically motivated nonlinear correction to the Wheeler-deWitt equation in the minisuperspace scheme for flat, $k=0$, Friedmann-Robertson-Walker (FRW) universes. When the only matter is a cosmological constant, the nonlinearity can provide a barrier that screens the original Big Bang, leading to the quantum creation of a universe through tunneling just as in the $k=1$ case. When the matter is instead a free massless scalar field, the nonlinearity can again prevent a contracting classical universe from reaching zero size by creating a bounce. Our studies here are self-consistent to leading order in perturbation theory for the nonlinear effects.

Final Journal version: Further clarification in Introduction and Conclusion. references added. figures same as in version 1

Country
Singapore
Related Organizations
Keywords

High Energy Physics - Theory, nonlinear Wheeler-deWitt equation, Quantum Physics, Information theory, quantum cosmology, 500, FOS: Physical sciences, General Relativity and Quantum Cosmology (gr-qc), Quantum cosmology, 530, General Relativity and Quantum Cosmology, singularity avoidance, High Energy Physics - Theory (hep-th), Singularity avoidance, Nonlinear Wheeler-deWitt equation, Quantization of the gravitational field, Quantum Physics (quant-ph), Relativistic cosmology, information theory

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
4
Average
Average
Average
Green
bronze