arXiv Analytics

Sign in

arXiv:2002.05703 [gr-qc]AbstractReferencesReviewsResources

Critical evaluation of common claims in loop quantum cosmology

Martin Bojowald

Published 2020-02-13Version 1

A large number of models have been analyzed in loop quantum cosmology, using mainly minisuperspace constructions and perturbations. At the same time, general physics principles from effective field theory and covariance have often been ignored. A consistent introduction of these ingredients requires substantial modifications of existing scenarios. As a consequence, none of the broader claims made mainly by the Ashtekar school --- such as the genericness of bounces with astonishingly semiclassical dynamics, robustness with respect to quantization ambiguities, the realization of covariance, and the relevance of certain technical results for potential observations --- hold up to scrutiny. Several useful lessons for a sustainable version of quantum cosmology can be drawn from this outcome.

Comments: 32 pages, invited contribution to Special Issue "Quantum Models for Cosmology"
Categories: gr-qc, hep-th
Related articles: Most relevant | Search more
arXiv:gr-qc/9910104 (Published 1999-10-28)
Loop Quantum Cosmology II: Volume Operators
arXiv:gr-qc/9910103 (Published 1999-10-28)
Loop Quantum Cosmology I: Kinematics
arXiv:gr-qc/0506024 (Published 2005-06-05, updated 2005-10-18)
Separable sequences in Bianchi I loop quantum cosmology