$γ$ Parameter and Solar System constraint in Chameleon Brans Dick Theory

Details $γ$ Parameter and Solar System constraint in Chameleon Brans Dick Theory $γ$ Parameter and Solar System constraint in Chameleon Brans Dick Theory

2011-12-31

arxiv.org/abs/1201.0271v1

Physical Review D 83, 104019 (2011)

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

8 pages, 2 figures

Scientific paper

The post Newtonian parameter is considered in the Chameleon-Brans-Dicke frame. In the first step, the general form of this parameter and also effective gravitational constant is obtained. An arbitrary function for $f(\Phi)$, which indicates the coupling between matter and scalar field, is introduced to investigate validity of solar system constraint. It is shown that Chameleon-Brans-Dicke model can satisfy the solar system constraint and gives us an $\omega$ parameter of order $10^4$, which is in comparable to the constraint which has been indicated in {\cite{17-a}}.

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