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arXiv · 2112.13042

Non-singular non-flat universes

Andres Felipe Estupinan Salamanca·Sergio Bravo Medina·Marek Nowakowski·Davide Batic
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Abstract

The quest to understand better the nature of the initial cosmological singularity is with us since the discovery of the expanding universe. Here, we propose several non-flat models, among them the standard cosmological scenario with a critical cosmological constant, the Einstein-Cartan cosmology, the Milne-McCrea universe with quantum corrections and a non-flat universe with bulk viscosity. Within these models, we probe into the initial singularity by using different techniques. Several nonsingular universes emerge, one of the possibilities being a static non-expanding and stable Einstein universe.

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Andres Felipe Estupinan Salamanca, Sergio Bravo Medina, Marek Nowakowski, Davide Batic. 2021-12-24. Non-singular non-flat universes. https://doi.org/10.1016/j.aop.2021.168727

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