3 years ago

Emergent universe in theories with natural UV cutoffs.

Kourosh Nozari, Emmanuel N. Saridakis, Mohsen Khodadi

We investigate the realization of the emergent universe scenario in theories with natural UV cutoffs, namely a minimum length and a maximum momentum, quantified by a new deformation parameter in the generalized uncertainty principle. We extract the Einstein static universe solutions and we examine their stability through a phase-space analysis. As we show, the role of the new deformation parameter is crucial in a twofold way: Firstly, it leads to the appearance of new Einstein static universe critical points, that are absent in standard cosmology. Secondly, it provides a way for a graceful exit from the Einstein static universe into the expanding thermal history, that is needed for a complete and successful realization of the emergent universe scenario.

Publisher URL: http://arxiv.org/abs/1612.09254

DOI: arXiv:1612.09254v2

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