Thin-shell Solution of Chameleon Mechanism in Brans-Dicke Scalar-Tensor Model
Azwar Sutiono, Agustina Widiyani, Marliana, Getbogi Hikmawan, Agus Suroso, Freddy P. Zen

Institut Teknologi Bandung

Abstract

We investigated the chameleon screening mechanism in Brans-Dicke scalar-tensor theory. We kept the original idea of the standard chameleon mechanism that the field is massive where the density is high but is nearly free in the solar system, where the density is low. We found the thin-shell solution for a static and spherical symmetric body and showed the model^s relevance to the observations on a local scale.

Keywords: Chameleon, screening mechanism, Brans-Dicke

Topic: Theoretical High Energy Physics