Observational exclusion of a consistent loop quantum cosmology scenario
Bolliet B, Barrau A, Grain J, Schander S (2016)
Publication Language: English
Publication Status: Published
Publication Type: Journal article, Original article
Publication year: 2016
Journal
Publisher: American Physical Society
Book Volume: 93
Article Number: 124011
Journal Issue: 12
DOI: 10.1103/PhysRevD.93.124011
Abstract
It is often argued that inflation erases all the information about what took place before it started. Quantum gravity, relevant in the Planck era, seems therefore mostly impossible to probe with cosmological observations. In general, only very ad hoc scenarios or hyper fine-tuned initial conditions can lead to observationally testable theories. Here we consider a well-defined and well-motivated candidate quantum cosmology model that predicts inflation. Using the most recent observational constraints on the cosmic microwave background B-modes, we show that the model is excluded for all its parameter space, without any tuning. Some important consequences are drawn for the deformed algebra approach to loop quantum cosmology. We emphasize that neither loop quantum cosmology in general nor loop quantum gravity are disfavored by this study but their falsifiability is established.
Authors with CRIS profile
Involved external institutions
National Center for Scientific Research / Centre national de la recherche scientifique (CNRS)
France (FR)
University of Grenoble Alpes (UGA) / Université de Grenoble
France (FR)
France (FR)
University of Grenoble Alpes (UGA) / Université de Grenoble
France (FR)
How to cite
APA:
Bolliet, B., Barrau, A., Grain, J., & Schander, S. (2016). Observational exclusion of a consistent loop quantum cosmology scenario. Physical Review D, 93(12). https://dx.doi.org/10.1103/PhysRevD.93.124011
MLA:
Bolliet, Boris, et al. "Observational exclusion of a consistent loop quantum cosmology scenario." Physical Review D 93.12 (2016).
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