Crossing of the Phantom Divided Barrier with Lorentz Invariance Violating Fields
General Relativity and Quantum Cosmology
2008-11-26 v2
Abstract
We study possible crossing of the phantom divided barrier in a Lorentz invariance violating dark energy model. Lorentz invariance violation which is achieved by introducing a vector field in the action, incorporates directly in the dynamics of the scalar field and equation of state. This interesting feature allows us to study phantom divided barrier crossing in the context of Lorentz invariance violation. We show that for suitable choice of parameter space, equation of state can cross phantom divided barrier just by one scalar field and Lorentz violating vector field controls this crossing.
Keywords
Cite
@article{arxiv.0803.2398,
title = {Crossing of the Phantom Divided Barrier with Lorentz Invariance Violating Fields},
author = {S. Davood Sadatian and Kourosh Nozari},
journal= {arXiv preprint arXiv:0803.2398},
year = {2008}
}
Comments
14 pages, 4 figures, Revised and References added, Accepted for Publication in Europhysics Letters