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arXiv · 0906.1789

Non-singular cosmology in a model of non-relativistic gravity

Yi-Fu Cai·Emmanuel N. Saridakis
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Abstract

We present a model of non-relativistic gravitational theory which is power-counting renormalizable in 3+1 dimensional spacetime. When applied to cosmology, the relativity-violation terms lead to a dark radiation component, which can give rise to a bounce if dark radiation possesses negative energy density. Additionally, we investigate a cyclic extension of the non-singular cosmology in which the universe undergoes contractions and expansions periodically. In both scenarios the background theory is well defined at the quantum level.

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Yi-Fu Cai, Emmanuel N. Saridakis. 2009-10-01. Non-singular cosmology in a model of non-relativistic gravity. https://doi.org/10.1088/1475-7516/2009/10/020

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