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Evolution of Density Parameters on a Smooth Embedded Universe
Author(s) -
Capistrano Abraão J.S.
Publication year - 2018
Publication title -
annalen der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.009
H-Index - 68
eISSN - 1521-3889
pISSN - 0003-3804
DOI - 10.1002/andp.201700232
Subject(s) - physics , cosmic microwave background , dark energy , planck , cosmic cancer database , universe , theoretical physics , curvature , space (punctuation) , energy density , baryon , astrophysics , cosmology , quantum mechanics , anisotropy , linguistics , philosophy , geometry , mathematics
In this paper we examine the evolution of cosmic density parameters in a four‐dimensional space‐time embedded in a five‐dimensional bulk space. We show that the extrinsic curvature is an independent spin‐2 field governed by the Gupta equations. Without evoking a dark energy fluid, the corresponding cosmological model is compared with the phenomenological XCDM model and shows a good concordance with recent cosmological datasets from Planck Collaboration and the latest Baryons Acoustic Oscillations/Cosmic Microwave Background (BAO/CMBR) + SNIa studying the evolution of density parameters. In addition, a discussion on the coincidence problem is also proposed.
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