Observational Constraints on Teleparallel Dark Energy

TL;DR

This paper constrains teleparallel dark energy models using observational data, showing compatibility with data and favoring nonminimal coupling, capable of describing both quintessence and phantom regimes.

Contribution

It provides observational constraints on teleparallel dark energy with various potentials, highlighting the role of nonminimal coupling and the model's versatility.

Findings

Data favor nonminimal coupling in the model.

The model is compatible with observational data.

It can describe both quintessence and phantom regimes.

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.