Effective loop quantum cosmology as a higher-derivative scalar-tensor theory
General Relativity and Quantum Cosmology
2017-12-13 v2 High Energy Physics - Theory
Abstract
Recently, Chamseddine and Mukhanov introduced a higher-derivative scalar-tensor theory which leads to a modified Friedmann equation allowing for bouncing solutions. As we note in the present work, this Friedmann equation turns out to reproduce exactly the loop quantum cosmology effective dynamics for a flat isotropic and homogeneous space-time. We generalize this result to obtain a class of scalar-tensor theories, belonging to the family of mimetic gravity, which all reproduce the loop quantum cosmology effective dynamics for flat, closed and open isotropic and homogeneous space-times.
Cite
@article{arxiv.1703.10812,
title = {Effective loop quantum cosmology as a higher-derivative scalar-tensor theory},
author = {David Langlois and Hongguang Liu and Karim Noui and Edward Wilson-Ewing},
journal= {arXiv preprint arXiv:1703.10812},
year = {2017}
}
Comments
22 pages. v2: minor clarifications added, references updated