Runaway Domain Wall and Space-time Varying alpha
Cosmology and Nongalactic Astrophysics
2011-04-04 v2 General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
Abstract
Recently spatial as well as temporal variations of the fine structure constant alpha have been reported. We show that a "runaway domain wall", which arises for the scalar field potential without minima, can account for such variations simultaneously. The time variation is induced by a runaway potential and the spatial variation is induced by the formation of a domain wall. The model is consistent with the current cosmological data and can be tested by the future experiments to test the equivalence principle.
Keywords
Cite
@article{arxiv.1102.0105,
title = {Runaway Domain Wall and Space-time Varying alpha},
author = {Takeshi Chiba and Masahide Yamaguchi},
journal= {arXiv preprint arXiv:1102.0105},
year = {2011}
}
Comments
10 pages, 2 figures, published version