Future deceleration due to cosmic backreaction in presence of the event horizon

Details Future deceleration due to cosmic backreaction in presence of the event horizon Future deceleration due to cosmic backreaction in presence of the event horizon

2010-10-25

arxiv.org/abs/1010.5071v3

MNRAS: Letters 418: L45--L48

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

Latex, 5 pages, 2 figures. This version has small changes to match with the version published in MNRAS: Letters

Scientific paper

10.1111/j.1745-3933.2011.01140.x

The present acceleration of the universe leads to the formation of a cosmological future event horizon. We explore the effects of the event horizon on cosmological backreaction due to inhomogeneities in the universe. Beginning from the onset of the present accelerated era, we show that backreaction in presence of the event horizon causes acceleration to slow down in the subsequent evolution. Transition to deceleration occurs eventually, ensuring avoidance of a big rip.

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