# Detecting dark energy in orbit: The cosmological chameleon

@article{Brax2004DetectingDE, title={Detecting dark energy in orbit: The cosmological chameleon}, author={Philippe Brax and Carsten van de Bruck and A. C. Davis and Justin Khoury and Amanda Weltman}, journal={Physical Review D}, year={2004}, volume={70}, pages={123518} }

We show that the chameleon scalar field can drive the current phase of cosmic acceleration for a large class of scalar potentials that are also consistent with local tests of gravity. These provide explicit realizations of a quintessence model where the quintessence scalar field couples directly to baryons and dark matter with gravitational strength. We analyze the cosmological evolution of the chameleon field and show the existence of an attractor solution with the chameleon following the…

## 237 Citations

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