Loop Quantum Cosmology and the Fine Structure Constant
General Relativity and Quantum Cosmology
2016-04-29 v1 High Energy Astrophysical Phenomena
High Energy Physics - Theory
Abstract
The cosmological implications of introducing a variation to the fine structure `constant', \alpha are examined within the context of Loop Quantum Cosmology. The evolution of \alpha is described using the model introduced by Bekenstein, Sandvik, Barrow and Magueijo, in which a ghost scalar field produces the variation. The dynamics of the system are examined in flat and closed cosmological settings. Matter consisting of the scalar field and radiation are examined with a thermodynamically motivated coupling between the two, which can lead to a series of bounces induced by both the negative density effects of the ghost field and the loop effects.
Cite
@article{arxiv.1307.5527,
title = {Loop Quantum Cosmology and the Fine Structure Constant},
author = {David Sloan},
journal= {arXiv preprint arXiv:1307.5527},
year = {2016}
}
Comments
10 pages, 5 figures