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arXiv · 2107.02872

On the initial singularity in Kantowski-Sachs spacetime

Elham Ghorani·Yaghoub Heydarzade
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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.

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Elham Ghorani, Yaghoub Heydarzade. 2021-07-06. On the initial singularity in Kantowski-Sachs spacetime. https://doi.org/10.1140/epjc%2Fs10052-021-09355-7

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