Resolution of cosmological singularity in Hořava-Lifshitz cosmology
arXiv:2301.10867 · doi:10.3390/universe9040160
Abstract
The standard CDM model despite its agreement with observational data still has some issues unaddressed, lie the problem of initial singularity. Solving that problem usually requires modifications of general relativity. However, there appeared the Hořava-Lifshitz (HL) theory of gravity, in which equations governing cosmological evolution include a new term scaling similarly as dark radiation term in the Friedmann equations, enabling a bounce of the universe instead of initial singularity. This review describes past works on a stability of such a bounce in different formulations of HL theory, initial detailed balance scenario and further projectable versions containing higher than quadratic term to the original action.
arXiv commentSubmitted to Universe. Rewritten in order to remove repetitions from the previous papers
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