Chameleons on the Racetrack [PDF]
Horatiu Nastase, Amanda WeltmanWe 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.View original: http://arxiv.org/abs/1301.7120
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