Interacting Holographic Dark Energy model in Brans-Dicke cosmology and coincidence problem

We study the dynamics of interacting holographic dark energy model in Brans-Dicke cosmology for the future event horizon and the Hubble horizon cut-offs. We determine the system of first-order differential equations for the future event horizon and Hubble horizon cut-offs, and obtain the correspondi...

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Bibliographic Details
Published in:arXiv.org 2017-11
Main Authors: Felegary, F, Darabi, F, Setare, M R
Format: Article
Language:English
Subjects:
Cosmology
Dark energy
Differential equations
Event horizon
Saddle points
Online Access:Get full text
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Summary:We study the dynamics of interacting holographic dark energy model in Brans-Dicke cosmology for the future event horizon and the Hubble horizon cut-offs. We determine the system of first-order differential equations for the future event horizon and Hubble horizon cut-offs, and obtain the corresponding fixed points, attractors, repellers and saddle points. Finally, we investigate the cosmic coincidence problem in this model for the future event horizon and Hubble horizon cut-offs and find that for both cut-offs and for a variety of Brans-Dicke parameters the coincidence problem is almost resolved.
ISSN:2331-8422
DOI:10.48550/arxiv.1612.03406