Comment on 4D Lorentz invariance violations in the brane-world
arXiv:hep-th/0112020 · doi:10.1088/1126-6708/2002/07/060
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.
21 pages, 6 figures, REVTEX, New section added
References in corpus (10)
- General brane cosmologies and their global spacetime structure
- Gravitational Lorentz Violations and Adjustment of the Cosmological Constant in Asymmetrically Warped Spacetimes
- Cosmology in the Randall-Sundrum Brane World Scenario
- Causality of the brane universe
- Branes on Charged Dilatonic Backgrounds: Self-Tuning, Lorentz Violations and Cosmology
- Shortcuts in the fifth dimension
- Extra dimensions present a new flatness problem
- The Cosmological Constant Problem in Brane--Worlds and Gravitational Lorentz Violations
- Tunneling into Extra Dimension and High-Energy Violation of Lorentz Invariance
- Holography of asymmetrically warped space-times
Cited by in corpus (8)
- Gravitational waves and extra dimensions: a short review
- Closed timelike curves in asymmetrically warped brane universes
- Causality-Violating Higgs Singlets at the LHC
- Kaluza-Klein brane cosmology with a bulk scalar field
- Modified Gravitational Equations on Braneworld with Lorentz Invariant Violation
- Lorentz violation and the speed of gravitational waves in brane-worlds
- Kaluza-Klein two-brane-worlds cosmology at low energy
- Effect of bulk Lorentz violation on anisotropic brane cosmologies