314 citations · 1k across the 20 of their papers we have counts for
4 papers · 2 filters
Chameleon Dark Energy
Ph. Brax, C. van de Bruck, A. C. Davis +2
Chameleons are scalar fields whose mass depends on the environment, specifically on the ambient matter density. While nearly massless in the cosmos, where the matter density is tin…
Is the radion a chameleon?
Ph. Brax, C. van de Bruck, A. -C. Davis
The chameleon mechanism is a way to give an effective mass to a light scalar field via field self-interaction and interaction with matter. We study this mechanism in models in whic…
Cosmological Perturbations During Radion Stabilization
P. R. Ashcroft, C. van de Bruck, A. -C. Davis
We consider the evolution of cosmological perturbations during radion stabilization, which we assume to happen after a period of inflation in the early universe. Concentrating on t…
Detecting Dark Energy in Orbit -- the Cosmological Chameleon
Philippe Brax, Carsten van de Bruck, Anne-Christine Davis +2
We show that the chameleon scalar field can drive the current phase of cosmic acceleration for a large class of scalar potentials that are also consistent with local tests of gravi…