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Title: Phase-space analysis of teleparallel dark energy

Abstract

We perform a detailed dynamical analysis of the teleparallel dark energy scenario, which is based on the teleparallel equivalent of General Relativity, in which one adds a canonical scalar field, allowing also for a nonminimal coupling with gravity. We find that the universe can result in the quintessence-like, dark-energy-dominated solution, or to the stiff dark-energy late-time attractor, similarly to standard quintessence. However, teleparallel dark energy possesses an additional late-time solution, in which dark energy behaves like a cosmological constant, independently of the specific values of the model parameters. Finally, during the evolution the dark energy equation-of-state parameter can be either above or below -1, offering a good description for its observed dynamical behavior and its stabilization close to the cosmological-constant value.

Authors:
 [1];  [2];  [3]
  1. College of Mathematics and Physics, Chongqing University of Posts and Telecommunications, Chongqing 400065 (China)
  2. Physics Division, National Technical University of Athens, 15780 Zografou Campus, Athens (Greece)
  3. Department of Mathematics, Universidad Central de Las Villas, Santa Clara, CP 54830 (Cuba)
Publication Date:
OSTI Identifier:
22279835
Resource Type:
Journal Article
Journal Name:
Journal of Cosmology and Astroparticle Physics
Additional Journal Information:
Journal Volume: 2012; Journal Issue: 07; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1475-7516
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ASTROPHYSICS; ATTRACTORS; COSMOLOGICAL CONSTANT; COSMOLOGY; COUPLING; EQUATIONS OF STATE; GENERAL RELATIVITY THEORY; GRAVITATION; MATHEMATICAL SOLUTIONS; NONLUMINOUS MATTER; PHASE SPACE; SCALAR FIELDS; UNIVERSE

Citation Formats

Xu, Chen, Saridakis, Emmanuel N., and Leon, Genly, E-mail: xuc1990@126.com, E-mail: Emmanuel_Saridakis@baylor.edu, E-mail: genly@uclv.edu.cu. Phase-space analysis of teleparallel dark energy. United States: N. p., 2012. Web. doi:10.1088/1475-7516/2012/07/005.
Xu, Chen, Saridakis, Emmanuel N., & Leon, Genly, E-mail: xuc1990@126.com, E-mail: Emmanuel_Saridakis@baylor.edu, E-mail: genly@uclv.edu.cu. Phase-space analysis of teleparallel dark energy. United States. doi:10.1088/1475-7516/2012/07/005.
Xu, Chen, Saridakis, Emmanuel N., and Leon, Genly, E-mail: xuc1990@126.com, E-mail: Emmanuel_Saridakis@baylor.edu, E-mail: genly@uclv.edu.cu. Sun . "Phase-space analysis of teleparallel dark energy". United States. doi:10.1088/1475-7516/2012/07/005.
@article{osti_22279835,
title = {Phase-space analysis of teleparallel dark energy},
author = {Xu, Chen and Saridakis, Emmanuel N. and Leon, Genly, E-mail: xuc1990@126.com, E-mail: Emmanuel_Saridakis@baylor.edu, E-mail: genly@uclv.edu.cu},
abstractNote = {We perform a detailed dynamical analysis of the teleparallel dark energy scenario, which is based on the teleparallel equivalent of General Relativity, in which one adds a canonical scalar field, allowing also for a nonminimal coupling with gravity. We find that the universe can result in the quintessence-like, dark-energy-dominated solution, or to the stiff dark-energy late-time attractor, similarly to standard quintessence. However, teleparallel dark energy possesses an additional late-time solution, in which dark energy behaves like a cosmological constant, independently of the specific values of the model parameters. Finally, during the evolution the dark energy equation-of-state parameter can be either above or below -1, offering a good description for its observed dynamical behavior and its stabilization close to the cosmological-constant value.},
doi = {10.1088/1475-7516/2012/07/005},
journal = {Journal of Cosmology and Astroparticle Physics},
issn = {1475-7516},
number = 07,
volume = 2012,
place = {United States},
year = {2012},
month = {7}
}