Cosmological model of the interaction between dark matter and dark energy

Abstract

In this paper, we test the dark matter-dark energy interacting cosmological model with a dynamic equation of state $w_{DE}(z)=w_0+w_{1}z/(1+z)$, using type Ia supernovae (SNe Ia), Hubble parameter data, baryonic acoustic oscillation (BAO) measurements, and the cosmic microwave background (CMB) observation. This interacting cosmological model has not been studied before. The best-fitted parameters with $1\sigma$ uncertainties are $\delta =-0.022\pm 0.006$, ${\Omega }_{DM}^0=0.213\pm 0.008$, $w_0=-1.210\pm 0.033$ and $w_1=0.872\pm 0.072$ with ${\chi }_{min}^2/dof=0.990$. At the $1\sigma$ confidence level, we find $\delta <0$, which means that the energy transfer prefers from dark matter to dark energy. We also find that the SNe Ia are in tension with the combination of CMB, BAO and Hubble parameter data. The evolution of ${\rho }_{DM}/{\rho }_{DE}$ indicates that this interacting model is a good approach to solve the coincidence problem, because the ${\rho }_{DE}$ decrease with scale factor $a$. The transition redshift is $z_{tr}=0.63\pm 0.07$ in this model.

6 pages, 6 figures, published in A&A

References in corpus (9)

• Baryon Acoustic Oscillations in the Ly-α forest of BOSS quasars
• Dark Energy-Dark Matter Interaction and putative violation of the Equivalence Principle from the Abell Cluster A586
• Consequences of dark matter-dark energy interaction on cosmological parameters derived from SNIa data
• Cosmological coincidence problem in interacting dark energy models
• Interacting Vector-like Dark Energy, the First and Second Cosmological Coincidence Problems
• Cosmological Evolution of Interacting Phantom Energy with Dark Matter
• Interacting models of soft coincidence
• Measuring Dark Energy with Gamma-Ray Bursts and Other Cosmological Probes
• Revisiting the Cosmological Constraints on the Interacting Dark Energy Models

Cited by in corpus (12)

• Gamma-ray Burst Cosmology
• A new interacting two fluid model and its consequences
• Distinguishing interacting dark energy from wCDM with CMB, lensing, and baryon acoustic oscillation data
• Constraining interacting dark energy with CMB and BAO future surveys
• Dark Matter-Dark Energy Interaction and the Shape of Cosmic Voids
• Differentiating dark interactions with perturbation
• Forecast Analysis on Interacting Dark Energy Models from Future Generation PICO and DESI Missions
• The Integrated Sachs-Wolfe Effect in Interacting Dark Matter-Dark Energy Models
• Interacting Dark Energy: New parametrization and observational constraints
• Interacting Dark Energy and Its Implications for Unified Dark Sector
• Painlevé analysis for the cosmological field equations in Weyl Integrable Spacetime
• Interacting tachyon with varying mass dark matter