Chameleons on the Racetrack
arXiv:1301.7120 · doi:10.1007/JHEP08(2013)059
Abstract
We modify the ansatz for embedding chameleon scalars in string theory proposed in [1] by considering a racetrack superpotential with two KKLT-type exponentials $e^{ia\varrho}$ instead of one. This satisfies all experimental constraints, while also allowing for the chameleon to be light enough on cosmological scales to be phenomenologically interesting.
11 pages, 1 figure