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arXiv · 1602.03869

Chameleonic Theories: A Short Review

Andrea Zanzi
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Abstract

In the chameleon mechanism, a field (typically scalar) has a mass that depends on the matter density of the environment: the larger is the matter density, the larger is the mass of the chameleon. We briefly review some aspects of chameleonic theories. In particular, in a typical class of these theories, we discuss the lagrangian, the role of conformal transformations, the equation of motion and the thin-shell effect. We also discuss $f(R)$ theories and chameleonic quantum gravity.

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Andrea Zanzi. 2015-12-30. Chameleonic Theories: A Short Review. https://doi.org/10.3390/universe1030446

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