Instabilities and the null energy condition
High Energy Physics - Theory
2009-11-11 v3 Astrophysics
General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
Abstract
We show that violation of the null energy condition implies instability in a broad class of models, including classical gauge theories with scalar and fermionic matter as well as any perfect fluid. When applied to the dark energy, our results imply that is unlikely to be less than -1.
Keywords
Cite
@article{arxiv.hep-th/0502203,
title = {Instabilities and the null energy condition},
author = {Roman V. Buniy and Stephen D. H. Hsu},
journal= {arXiv preprint arXiv:hep-th/0502203},
year = {2009}
}
Comments
5 pages, 1 figure, revtex, presentation improved, minor changes