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Chameleon dark energy models with characteristic signatures
Radouane Gannouji, Bruno Moraes, David F. Mota +3
In chameleon dark energy models, local gravity constraints tend to rule out parameters in which observable cosmological signatures can be found. We study viable chameleon potential…
Cosmology of Chameleons with Power-Law Couplings
David F. Mota, Hans A. Winther
In chameleon field theories a scalar field can couple to matter with gravitational strength and still evade local gravity constraints due to a combination of self-interactions and…
Chameleons with Field Dependent Couplings
Philippe Brax, Carsten van de Bruck, David F. Mota +2
Certain scalar-tensor theories exhibit the so-called chameleon mechanism, whereby observational signatures of scalar fields are hidden by a combination of self-interactions and int…