Regular Article - Theoretical Physics
On the initial singularity in Kantowski–Sachs spacetime
, Gorgan, Iran
2 Department of Mathematics, Faculty of Sciences, Bilkent University, 06800, Ankara, Turkey
Accepted: 19 June 2021
Published online: 29 June 2021
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.
© The Author(s) 2021
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