Dynamics and Light Propagation in a Universe with Discrete Matter Content
General Relativity and Quantum Cosmology
2012-06-07 v3
Abstract
We discuss a model for a universe with discrete matter content instead of the continuous perfect fluid taken in FRW models. We show how the redshift in such a universe deviates from the corresponding one in an FRW cosmology. This illustrates the fact that averaging the matter content in a universe and then evolving it in time, is not the same as evolving a universe with discrete matter content. The main reason for such deviation is the fact that the photons in such a universe mainly travel in an empty space rather than the continuous perfect fluid in FRW geometry.
Cite
@article{arxiv.1205.6877,
title = {Dynamics and Light Propagation in a Universe with Discrete Matter Content},
author = {Mohamad Shalaby},
journal= {arXiv preprint arXiv:1205.6877},
year = {2012}
}
Comments
submitted as AIIMS diploma essay at http://archive.aims.ac.za/2010