The transient acceleration from time-dependent interacting dark energy models

The transient acceleration which the current cosmic acceleration is not eternal is possible by introducing the interaction between dark matter and dark energy. If the energy transfer is from dark energy to dark matter, then it is possible to realize the transient acceleration. We study the possibili...

Full description

Saved in:
Bibliographic Details
Published in:arXiv.org 2013-09
Main Authors: Xi-ming, Chen, Gong, Yungui, Saridakis, Emmanuel N
Format: Article
Language:English
Subjects:
Acceleration
Dark energy
Dark matter
Deceleration
Energy transfer
Flux density
Mathematical models
Parameters
Time dependence
Universe
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The transient acceleration which the current cosmic acceleration is not eternal is possible by introducing the interaction between dark matter and dark energy. If the energy transfer is from dark energy to dark matter, then it is possible to realize the transient acceleration. We study the possibility of transient acceleration by considering two time-dependent phenomenological interaction forms so that the energy transfer increases as the universe evolves. Starting from a simple and extending to a more complicated ansatz, we obtain analytical expressions for the evolutions of the deceleration and the various energy density parameters. We find the ranges of the parameters in the models for a transient acceleration.
ISSN:2331-8422
DOI:10.48550/arxiv.1111.6743