"Swiss-Cheese" Inhomogeneous Cosmology & the Dark Energy Problem
Astrophysics
2014-10-13 v1 General Relativity and Quantum Cosmology
High Energy Physics - Theory
Abstract
We study an exact swiss-cheese model of the Universe, where inhomogeneous LTB patches are embedded in a flat FLRW background, in order to see how observations of distant sources are affected. We find negligible integrated effect, suppressed by (L/R_{H})^3 (where L is the size of one patch, and R_{H} is the Hubble radius), both perturbatively and non-perturbatively. We disentangle this effect from the Doppler term (which is much larger and has been used recently \cite{BMN} to try to fit the SN curve without dark energy) by making contact with cosmological perturbation theory.
Keywords
Cite
@article{arxiv.astro-ph/0702555,
title = {"Swiss-Cheese" Inhomogeneous Cosmology & the Dark Energy Problem},
author = {Tirthabir Biswas and Alessio Notari},
journal= {arXiv preprint arXiv:astro-ph/0702555},
year = {2014}
}
Comments
35 pages, 6 figures