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

2010/10/31 by Nilok Bose, A. S. Majumdar · 1 citation
Physics and Astronomy · #Acceleration #Apparent horizon #COSMIC cancer database #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Event (particle physics) #Event horizon #Galaxies: Formation, Evolution, Phenomena #Horizon #Universe #astro-ph.CO #gr-qc

paper · pdf · doi:10.1111/j.1745-3933.2011.01140.x

published as MNRAS: Letters 418: L45--L48 · Latex, 5 pages, 2 figures. This version has small changes to match with the version published in MNRAS: Letters

openalex publication_date 2011/09/29 · arxiv created 2011/11/18 · arxiv updated 2011/11/21 · openalex created_date 2019/06/27 · openalex updated_date 2026/08/05

Abstract

ABSTRACT 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 accelerating era, we show that backreaction in presence of the event horizon causes acceleration to slow down in the subsequent evolution. Transition to another decelerating era could ensue eventually at a future epoch, ensuring avoidance of a big rip.

Citations

• Description of our cosmological spacetime as a perturbed conformal Newtonian metric and implications for the backreaction proposal for the accelerating universe
• Light-cone averaging in cosmology: formalism and applications
• Applicability of the linearly perturbed FRW metric and Newtonian cosmology
• Backreaction of cosmological perturbations in covariant macroscopic gravity
• Dynamics of dark energy
• Improved Cosmological Constraints from New, Old, and Combined Supernova Data Sets
• Gauge invariant averages for the cosmological backreaction
• Cosmology with weak lensing surveys

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