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arXiv · 0904.0829

Cosmology of the Lifshitz universe

Gianluca Calcagni
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Abstract

We study the ultraviolet complete non-relativistic theory recently proposed by Horava. After introducing a Lifshitz scalar for a general background, we analyze the cosmology of the model in Lorentzian and Euclidean signature. Vacuum solutions are found and it is argued the existence of non-singular bouncing profiles. We find a general qualitative agreement with both the picture of Causal Dynamical Triangulations and Quantum Einstein Gravity. However, inflation driven by a Lifshitz scalar field on a classical background might not produce a scale-invariant spectrum when the principle of detailed balance is assumed.

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Gianluca Calcagni. 2009-09-28. Cosmology of the Lifshitz universe. https://doi.org/10.1088/1126-6708/2009/09/112

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