On the holographic dark energy in chameleon scalar-tensor cosmology
arXiv:1404.2139 · doi:10.1007/s10509-013-1491-5
Abstract
We study the holographic dark energy (HDE) model in generalized Brans-Dicke scenario with a non-minimal coupling between the scalar field and matter lagrangian namely Chameleon Brans Dicke (CBD) mechanism. In this study we consider the interacting and non-interacting cases for two different cutoffs. The physical quantities of the model such as, equation of state (EoS) parameter, deceleration parameter and the evolution equation of dimensionless parameter of dark energy are obtained. We shall show that this model can describe the dynamical evolution of fraction parameter of dark energy in all epochs. Also we find the EoS parameter can cross the phantom divide line by suitable choices of parameters without any mines kinetic energy term.
10 pages
References in corpus (12)
- Dynamics of dark energy
- Cosmology and the Fate of Dilatation Symmetry
- Cosmological viability of f(R)-gravity as an ideal fluid and its compatibility with a matter dominated phase
- A Dark Energy Model Characterized by the Age of the Universe
- A New Model of Agegraphic Dark Energy
- A GMBCG Galaxy Cluster Catalog of 55,424 Rich Clusters from SDSS DR7
- Cosmological Constraints on New Agegraphic Dark Energy
- Holographic dark energy in Brans-Dicke theory
- Modified gravity as an alternative for Lambda-CDM cosmology
- Decaying Gravity
- Observational constraints on thawing quintessence models
- A new approach in stability analysis: case study: tachyon cosmology with non-minimally coupled scalar field-matter