The null energy condition and instability

Thumbnail Image

Date

Authors

Journal Title

Journal ISSN

Volume Title

Publisher

Abstract

Description

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.
11 pages, 5 figures, Revtex

Keywords

High Energy Physics - Theory, Astrophysics, General Relativity and Quantum Cosmology, High Energy Physics - Phenomenology

Citation

URI

http://salesiana.dossiersoluciones.com/handle/123456789/181935

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/hep-th/0606091
 http://arxiv.org/abs/hep-th/0606091
 Phys.Rev.D74:063518,2006
 doi:10.1103/PhysRevD.74.063518

Collections

arXiv