Interactions and Instabilities in Cosmology's Dark Sector
Cosmology and Nongalactic Astrophysics
2009-10-16 v1 General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
Abstract
I consider couplings between the dark energy and dark matter sectors. I describe how the existence of an adiabatic regime, in which the dark energy field instantaneously tracks the minimum of its effective potential, opens the door for a catastrophic instability. This {\it adiabatic instability} tightly constrains a wide class of interacting dark sector models. This talk was presented at, and will appear in the proceedings of the DPF-2009 conference.
Keywords
Cite
@article{arxiv.0910.2695,
title = {Interactions and Instabilities in Cosmology's Dark Sector},
author = {Mark Trodden},
journal= {arXiv preprint arXiv:0910.2695},
year = {2009}
}
Comments
6 pages, 2 figures. Talk presented at the DPF-2009 Conference, Detroit, MI, July 27-31, 2009. To appear in the proceedings