Role of Chameleon Field in presence of Variable Modified Chaplygin gas in Brans-Dicke Theory

Abstract

In this work, we have considered FRW model of the universe for Brans-Dicke (BD) theory with BD scalar field as a Chameleon field. First we have transformed the field equations and conservation equation from Jordan's frame to Einstein's frame. We have shown in presence of variable modified Chaplygin gas, the potential function $V$ and another analytic function $f$ always increase with respect to BD-Chameleon scalar field $\varphi$.

9 pages, 2 figures

References in corpus (7)

• f(R) Gravity and Chameleon Theories
• Variable Modified Chaplygin Gas and Accelerating Universe
• The Effect of a Chameleon Scalar Field on the Cosmic Microwave Background
• Revisiting chameleon gravity - thin-shells and no-shells with appropriate boundary conditions
• Stability analysis and Observational Measurement in Chameleonic Generalised Brans--Dicke Cosmology
• Gauss-Bonnet Chameleon Mechanism of Dark Energy
• Cosmic Evolution in Brans-Dicke Chameleon Cosmology