An Introduction to Chameleon Gravity

Abstract

Following work by Khoury and Weltman, we introduce a scalar field φ, the chameleon, which is conformally coupled to matter. That is, matter experiences a metric which is a conformal transform (parametrized by φ) of the Einstein metric. The effective potential of the field φ is a sum of its selfinteraction term and an exponential term due to the conformal… (More)

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