Cosmological Constraints on the Coupling Model from Observational Hubble Parameter and Baryon Acoustic Oscillation Measurements

Abstract

In the paper, we consider two models in which dark energy is coupled with either dust matter or dark matter, and discuss the conditions that allow more time for structure formation to take place at high redshifts. These models are expected to have a larger age of the universe than that of $\Lambda$CDM [universe consists of cold dark matter (CDM) and dark energy (a cosmological constant, $\Lambda$)], so it can explain the formation of high redshift gravitationally bound systems which the $\Lambda$CDM model cannot interpret. We use the observational Hubble parameter data (OHD) and Hubble parameter obtained from cosmic chronometers method ($H(z)$) in combination with baryon acoustic oscillation (BAO) data to constrain these models. With the best-fitting parameters, we discuss how the age, the deceleration parameter, and the energy density parameters evolve in the new universes, and compare them with that of $\Lambda$CDM.

17 pages, 8 figures, Universe accepted version

References in corpus (11)

• Raising the bar: new constraints on the Hubble parameter with cosmic chronometers at z$\sim$2
• Baryon Acoustic Oscillations in the Lyα forest of BOSS DR11 quasars
• An ultra-luminous quasar with a twelve-billion-solar-mass black hole at redshift 6.30
• Dark sector interaction: a remedy of the tensions between CMB and LSS data
• Interacting Vector-like Dark Energy, the First and Second Cosmological Coincidence Problems
• Using Pantheon and DES supernova, baryon acoustic oscillation, and Hubble parameter data to constrain the Hubble constant, dark energy dynamics, and spatial curvature
• Chameleon dark energy models with characteristic signatures
• Cosmological constraints from HII starburst galaxy apparent magnitude and other cosmological measurements
• Interacting Energy Components and Observational $H(z)$ Data
• Dark matter from dark energy-baryonic matter couplings
• Effects of the Hubble Parameter on the Cosmic Growth of the First Quasars

Cited by in corpus (2)

• Dynamical analysis and statefinder of Barrow holographic dark energy
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