The null energy condition and instability
高能物理 - 理论
2008-11-26 v1 天体物理学
广义相对论与量子宇宙学
高能物理 - 唯象学
摘要
We extend previous work showing that violation of the null energy condition implies instability in a broad class of models, including gauge theories with scalar and fermionic matter as well as any perfect fluid. Simple examples are given to illustrate these results. The role of causality in our results is discussed. Finally, we extend the fluid results to more general systems in thermal equilibrium. When applied to the dark energy, our results imply that w is unlikely to be less than -1.
引用
@article{arxiv.hep-th/0606091,
title = {The null energy condition and instability},
author = {Roman V. Buniy and Stephen D. H. Hsu and Brian M. Murray},
journal= {arXiv preprint arXiv:hep-th/0606091},
year = {2008}
}
备注
11 pages, 5 figures, Revtex