Comment on 4D Lorentz invariance violations in the brane-world
High Energy Physics - Theory
2014-11-18 v2 General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
Abstract
The brane-world scenario offers the possibility for signals to travel outside our visible universe and reenter it. We find the condition for a signal emitted from the brane to return to the brane. We study the propagation of such signals and show that, as seen by a 4D observer, these signals arrive earlier than light traveling along the brane. We also study the horizon problem and find that, while the bulk signals can travel far enough to homogenize the visible universe, it is unlikely that they have a significant effect since they are redshifted in the gravitational field of the bulk black hole.
Keywords
Cite
@article{arxiv.hep-th/0112020,
title = {Comment on 4D Lorentz invariance violations in the brane-world},
author = {Horace Stoica},
journal= {arXiv preprint arXiv:hep-th/0112020},
year = {2014}
}
Comments
21 pages, 6 figures, REVTEX, New section added