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arXiv · 0910.2695

Interactions and Instabilities in Cosmology's Dark Sector

Mark Trodden
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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.

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Mark Trodden. 2009-10-14. Interactions and Instabilities in Cosmology's Dark Sector. https://arxiv.org/abs/0910.2695

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