Brans-Dicke scalar field as a chameleon

2008/03/31 by Sudipta Das, Narayan Banerjee · 2 citations
Economics, Econometrics and Finance · Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Stochastic processes and financial applications #astro-ph #gr-qc

paper · pdf · doi:10.1103/physrevd.78.043512

published as Phys.Rev.D78:043512,2008 · 10 pages, 8 figures; Contents added, References added; Revised version accepted for publication in Physical Review D

arxiv created 2008/07/01 · openalex publication_date 2008/08/06 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

In this paper it is shown that in Brans-Dicke theory, if one considers a nonminimal coupling between the matter and the scalar field, it can give rise to a late time accelerated expansion for the Universe preceded by a decelerated expansion for very high values of the Brans-Dicke parameter \ensuremathω.

Citations

• First Estimations of Cosmological Parameters From BOOMERANG
• Measurements of Ω and Λ from 42 High‐Redshift Supernovae
• Cosmological Constant - the Weight of the Vacuum
• Mach's Principle and a Relativistic Theory of Gravitation
• The Gravity Lagrangian According to Solar System Experiments
• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Preliminary Maps and Basic Results
• A theoretician's analysis of the supernova data and the limitations in determining the nature of dark energy
• A LATE TIME ACCELERATION OF THE UNIVERSE WITH TWO SCALAR FIELDS: MANY POSSIBILITIES
• Dynamics of dark energy
• Is cosmic speed-up due to new gravitational physics?
• The Case for a Positive Cosmological Lambda-term
• Decaying gravity

Cited by

• Black hole solutions and pressure terms in induced gravity with Higgs potential
• Scalar field pressure in induced gravity with Higgs potential and dark matter