Cosmological backreaction and the future evolution of an accelerating universe
Nilok Bose, A. S. Majumdar
TL;DR
This paper explores how inhomogeneities and cosmic horizons influence the universe's acceleration, suggesting that backreaction could slow or reverse acceleration in the future.
Contribution
It demonstrates the impact of inhomogeneity backreaction within the Buchert framework on the universe's future evolution, highlighting potential deceleration scenarios.
Findings
Backreaction from inhomogeneities can slow down cosmic acceleration.
Presence of the cosmic event horizon affects backreaction impact.
Future deceleration of the universe is possible due to backreaction.
Abstract
We investigate the effect of backreaction due to inhomogeneities on the evolution of the present universe within the Buchert framework. Our analysis shows how backreaction from inhomogeneities in the presence of the cosmic event horizon causes the current acceleration of the Universe to slow down in the future and even lead in certain cases to the emergence of a future decelerating epoch.
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Taxonomy
TopicsCosmology and Gravitation Theories · Solar and Space Plasma Dynamics · Dark Matter and Cosmic Phenomena