Work

Observational constraints on teleparallel dark energy

Year: 2012

Type: article

Abstract: We use data from Type Ia Supernovae (SNIa), Baryon Acoustic Oscillations (BAO), and Cosmic Microwave Background (CMB) observations to constrain the recently proposed teleparallel dark energy scenario based on the teleparallel equivalent of General Relativity, in which one adds a canonical scalar field, allowing also for a nonminimal coupling with gravity. Using the power-law, the exponential and the inverse hyperbolic cosine potential ansatzes, we show that the scenario is compatible with observations. In particular, the data favor a nonminimal coupling, and although the scalar field is canonical the model can describe both the quintessence and phantom regimes.

Source: Journal of Cosmology and Astroparticle Physics

DOI: 10.1088/1475-7516/2012/01/002

Authors: Chao-Qiang Geng, Chung-Chi Lee, Emmanuel N Saridakis

Institutions: Chinese Academy of Sciences, National Tsing Hua University, Kavli Institute for Theoretical Sciences, National Center for Theoretical Sciences, Baylor University

Language: English

Topic: Cosmology and Gravitation Theories

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze

Funder: National Science Council

Award: G7604507047