Variations of Alpha in Space and Time
Astrophysics
2009-11-07 v2
Abstract
We study inhomogeneous cosmological variations in the fine structure 'constant', in Friedmann universes. Inhomogeneous motions of the scalar field driving changes in display spatial oscillations that decrease in amplitude with increasing time. The inhomogeneous evolution quickly approaches that found for exact Friedmann universes. We prove a theorem to show that oscillations of in time (or redshift) cannot occur in Friedmann universes in the BSBM theories considered here.
Cite
@article{arxiv.astro-ph/0202129,
title = {Variations of Alpha in Space and Time},
author = {J. D. Barrow and J. Magueijo and H. B. Sandvik},
journal= {arXiv preprint arXiv:astro-ph/0202129},
year = {2009}
}
Comments
7 pages, no figures. Final version: improved discussion and addition of new theorem excluding time oscillations