Table of Contents
ISRN High Energy Physics
Volume 2013, Article ID 414615, 7 pages
http://dx.doi.org/10.1155/2013/414615
Research Article

Extended Holographic Ricci Dark Energy in Chameleon Brans-Dicke Cosmology

Pailan College of Management and Technology, Bengal Pailan Park, Kolkata 700 104, India

Received 7 August 2013; Accepted 17 September 2013

Academic Editors: W. Li and M. Tórtola

Copyright © 2013 Surajit Chattopadhyay. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

In the present work, we have studied some features of the generalized Brans-Dicke (BD) model in which the scalar field is allowed to couple nonminimally with the matter sector. Extended holographic Ricci dark energy (EHRDE) has been considered in the above framework of BD cosmology. Some restrictions have been derived for the BD parameter , and a stronger matter-chameleon coupling has been observed with the expansion of the universe. In this framework, the equation of the state parameter of EHRDE has behaved like quintom. Also, we have reconstructed the potential and coupling function for BD model for the EHRDE. It has been observed that the potential function is increasing as the matter-chameleon coupling is getting stronger.