Impact of Lorentz violation on the dynamics of inflation
Cosmology and Nongalactic Astrophysics
2010-01-05 v1 High Energy Astrophysical Phenomena
General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
High Energy Physics - Theory
Abstract
This work deals with the dynamics of inflation in the context of a scalar-vector-tensor theory of gravity exhibiting spontaneous Lorentz violation at early times. We describe a first-order formalism which we use to obtain new exact Lorentz violating inflationary solutions for a broad family of models, some in the absence of a potential for the inflaton field. Our results show that different conditions are required to solve the horizon and flatness problems. In particular, we find a necessary condition for inflation to provide a solution to both problems and we show that in inflationary models with no inflaton potential a period of superinflation might be necessary to solve the flatness problem.
Keywords
Cite
@article{arxiv.0903.5297,
title = {Impact of Lorentz violation on the dynamics of inflation},
author = {P. P. Avelino and D. Bazeia and L. Losano and R. Menezes and J. J. Rodrigues},
journal= {arXiv preprint arXiv:0903.5297},
year = {2010}
}
Comments
6 pages, no figures