2013/07/18 by Nilok Bose, Bose, Nilok, A. S. Majumdar +1
Physics and Astronomy · #Acceleration #Aerospace engineering #Astrophysics #COSMIC cancer database #Classical mechanics #Cosmology #Cosmology and Gravitation Theories #Cosmology and Nongalactic Astrophysics (astro-ph.CO) #Dark energy #Epoch (astronomy) #FOS: Physical sciences #Galaxies: Formation, Evolution, Phenomena #Galaxy #Metric expansion of space #Physics #Range (aeronautics) #Solar and Space Plasma Dynamics #Universe #astro-ph.CO
paper · pdf · doi:10.48550/arxiv.1307.5022
13 pages, 5 figures. arXiv admin note: substantial text overlap with arXiv:1203.0125
arxiv created 2013/07/18 · openalex publication_date 2013/07/18 · arxiv updated 2013/07/19 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We investigate the effect of backreaction due to inhomogeneities on the evolution of the present Universe by considering the Universe to be partitioned into multiple domains within the Buchert framework. Taking the observed present acceleration of the universe as an essential input, we study the effect of inhomogeneities on the future evolution. We find that the backreaction from inhomogeneities causes the acceleration to slow down in the future for a range of initial configurations and model parameters, and even lead in certain cases to the emergence of a future decelerating epoch. We consider two different partitioning of the Universe and perform a comparative analysis for the two cases on the behaviour of the acceleration and backreaction of the Universe.