English

Mimicking the $\Lambda$CDM Universe through inhomogeneous space-time

General Relativity and Quantum Cosmology 2023-02-06 v1

Abstract

Starting from an inhomogeneous space-time model of the universe we could recreate a scenario of recent time accelerating universe dominated by Dark Energy type of fluid. The background matter component of such a universe was considered to be made up of a combination of an anisotropic fluid, a barotropic fluid and the presureless cold dark matter. It was found that inhomogeneity exhibits itself as the curvature term in such a universe. We corroborated our model with recent supernova Ia-JLA data together with H0H_{0} data and BAO data. Cosmographic analysis of the dynamical variables further show that the model can mimic the Λ\LambdaCDM cosmology very closely.

Keywords

Cite

@article{arxiv.2108.11083,
  title  = {Mimicking the $\Lambda$CDM Universe through inhomogeneous space-time},
  author = {Subhra Bhattacharya},
  journal= {arXiv preprint arXiv:2108.11083},
  year   = {2023}
}

Comments

Under review

R2 v1 2026-06-24T05:24:04.752Z