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arXiv · 1703.10812

Effective loop quantum cosmology as a higher-derivative scalar-tensor theory

David Langlois·Hongguang Liu·Karim Noui·Edward Wilson-Ewing
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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.

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David Langlois, Hongguang Liu, Karim Noui, Edward Wilson-Ewing. 2017-12-04. Effective loop quantum cosmology as a higher-derivative scalar-tensor theory. https://doi.org/10.1088/1361-6382%2Faa8f2f

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