Regular Article - Theoretical Physics
A power-law coupled three-form dark energy model
Department of Physics, Nankai University, Tianjin, 300071, China
* e-mail: Yohann@mail.nankai.edu.cn
Accepted: 4 January 2018
Published online: 22 February 2018
We consider a field theory model of coupled dark energy which treats dark energy as a three-form field and dark matter as a spinor field. By assuming the effective mass of dark matter as a power-law function of the three-form field and neglecting the potential term of dark energy, we obtain three solutions of the autonomous system of evolution equations, including a de Sitter attractor, a tracking solution and an approximate solution. To understand the strength of the coupling, we confront the model with the latest Type Ia Supernova, Baryon Acoustic Oscillations and Cosmic Microwave Background radiation observations, with the conclusion that the combination of these three databases marginalized over the present dark matter density parameter and the present three-form field gives stringent constraints on the coupling constant, ( confidence level), by which we present the model’s applicable parameter range.
© The Author(s), 2018