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

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