Interacting HDE and NADE in Brans-Dicke Chameleon Cosmology

TL;DR

This paper explores an interacting holographic dark energy model within Brans-Dicke chameleon cosmology, demonstrating phantom crossing and analyzing the evolution of cosmological parameters with potential implications for understanding dark energy.

Contribution

It introduces a novel interaction between dark matter and holographic dark energy in Brans-Dicke chameleon cosmology, including analysis of phantom crossing and agegraphic dark energy models.

Findings

Phantom crossing can be achieved with suitable parameters.

Interaction affects the evolution of cosmological parameters.

The model provides insights into dark energy dynamics.

Abstract

Motivated by the recent work of one of us [1], we generalize this work to the case where the pressureless dark matter and the holographic dark energy do not conserve separately but interact with each other. We investigate the cosmological applications of interacting holographic dark energy in Brans-Dicke theory with chameleon scalar field which is non-minimally coupled to the matter field. We find out that in this model the phantom crossing can be constructed if the model parameters are chosen suitably. We also perform the study for the new agegraphic dark energy model and calculate some relevant cosmological parameters and their evolution.