A cosmological model from emergence of space

Many studies have been carried out since T.Padmanabhan proposed that the cosmic acceleration can be understood from the perspective that spacetime dynamics is an emergent phenomenon. Motivated by such a new paradigm, we firstly study the de Sitter universe from emergence of space. After that we investigate the universes in general cases and then narrow down our discussions into one of them with a detailed discussion of the possibility in describing our real universe classically. Furthermore, a constraint on $Ht$ and a estimated value of $\tilde\Omega _{\Lambda}$ (caused by $\rho _{vac}$) can be derived from our model, the comparison with experiments is also presented. The results show the validity of our model.