345 citations · 2.7k across the 66 of their papers we have counts for
4 papers · 1 filter
Embedding DBI inflation in scalar-tensor theory
Carsten van de Bruck, David F. Mota, Joel M. Weller
The Dirac-Born-Infeld (DBI) action has been widely studied as an interesting example of a model of k-inflation in which the sound speed of the cosmological perturbations differs fr…
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…
The Dilaton and Modified Gravity
Philippe Brax, Carsten van de Bruck, Anne-Christine Davis +1
We consider the dilaton in the strong string coupling limit and elaborate on the original idea of Damour and Polyakov whereby the dilaton coupling to matter has a minimum with a va…
Tuning the Mass of Chameleon Fields in Casimir Force Experiments
Ph. Brax, C. van de Bruck, A. C. Davis +2
We have calculated the chameleon pressure between two parallel plates in the presence of an intervening medium that affects the mass of the chameleon field. As intuitively expected…