Non-singular non-flat universes

Andrés Felipe Estupiñán Salamanca; Sergio Bravo Medina; Marek Nowakowski; Davide Batic

doi:10.1016/j.aop.2021.168727

Non-singular non-flat universes

Andrés Felipe Estupiñán Salamanca, Sergio Bravo Medina, Marek Nowakowski, Davide Batic

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

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.

Original language	English
Article number	168727
Journal	Annals of Physics
Volume	436
DOIs	https://doi.org/10.1016/j.aop.2021.168727
State	Published - Jan 2022
Externally published	Yes

Keywords

Big bounce
Cosmological models
Early universe
Non-flat universe
Nonsingular universe

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10.1016/j.aop.2021.168727

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title = "Non-singular non-flat universes",

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.",

keywords = "Big bounce, Cosmological models, Early universe, Non-flat universe, Nonsingular universe",

author = "Salamanca, {Andr{\'e}s Felipe Estupi{\~n}{\'a}n} and Medina, {Sergio Bravo} and Marek Nowakowski and Davide Batic",

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AU - Nowakowski, Marek

AU - Batic, Davide

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AB - 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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KW - Cosmological models

KW - Early universe

KW - Non-flat universe

KW - Nonsingular universe

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JO - Annals of Physics

JF - Annals of Physics

M1 - 168727

ER -

Non-singular non-flat universes

Abstract

Keywords

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