On the initial singularity in Kantowski–Sachs spacetime
Date
2021-06-29
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Source Title
The European Physical Journal C
Print ISSN
1434-6044
Electronic ISSN
1434-6052
Publisher
Springer
Volume
81
Issue
6
Pages
1 - 14
Language
English
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Abstract
The emergent universe scenario is a proposal for resolving the Big Bang singularity problem in the standard Friedmann–Lemaitre–Robertson–Walker cosmology. In the context of this scenario, the Universe originates from a nonsingular static state. In the present work, considering the realization of the emergent universe scenario, we address the possibility of having a nonsingular Kantowski–Sachs type static state. Considering four and five dimensional models (with and without brane), it is shown that both the existence and stability of a nonsingular state depend on the dimensions of the spacetime and the nature of the fluid supporting the geometry.