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  Testing loop quantum cosmology

Wilson-Ewing, E. (2017). Testing loop quantum cosmology. Comptes Rendus Physique, 18, 207-225. doi:10.1016/j.crhy.2017.02.004.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002C-59B9-C Version Permalink: http://hdl.handle.net/21.11116/0000-0000-76B4-0
Genre: Journal Article

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1612.04551.pdf (Preprint), 382KB
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 Creators:
Wilson-Ewing, Edward1, Author              
Affiliations:
1Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, escidoc:24014              

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Free keywords: General Relativity and Quantum Cosmology, gr-qc
 Abstract: Loop quantum cosmology predicts that quantum gravity effects resolve the big-bang singularity and replace it by a cosmic bounce. Furthermore, loop quantum cosmology can also modify the form of primordial cosmological perturbations, for example by reducing power at large scales in inflationary models or by suppressing the tensor-to-scalar ratio in the matter bounce scenario; these two effects are potential observational tests for loop quantum cosmology. In this article, I review these predictions and others, and also briefly discuss three open problems in loop quantum cosmology: its relation to loop quantum gravity, the trans-Planckian problem, and a possible transition from a Lorentzian to a Euclidean space-time around the bounce point.

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 Dates: 2016-12-142017
 Publication Status: Published in print
 Pages: 20 pages. Invited review for special edition of Comptes Rendus Physique
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 Identifiers: arXiv: 1612.04551
URI: http://arxiv.org/abs/1612.04551
DOI: 10.1016/j.crhy.2017.02.004
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Title: Comptes Rendus Physique
Source Genre: Journal
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Pages: - Volume / Issue: 18 Sequence Number: - Start / End Page: 207 - 225 Identifier: -