`c' is the speed of light, isn't it?
General Relativity and Quantum Cosmology
2015-06-25 v2 Astrophysics
High Energy Physics - Theory
Abstract
Theories proposing a varying speed of light have recently been widely promoted under the claim that they offer an alternative way of solving the standard cosmological problems. Recent observational hints that the fine structure constant may have varied during over cosmological scales also has given impetus to these models. In theoretical physics the speed of light, , is hidden in almost all equations but with different facets that we try to distinguish. Together with a reminder on scalar-tensor theories of gravity, this sheds some light on these proposed varying speed of light theories.
Keywords
Cite
@article{arxiv.gr-qc/0305099,
title = {`c' is the speed of light, isn't it?},
author = {George F. R. Ellis and Jean-Philippe Uzan},
journal= {arXiv preprint arXiv:gr-qc/0305099},
year = {2015}
}
Comments
14 pages, Latex