Cosmological model from emergence of space

Many studies have been carried out since 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 first study the de Sitter universe from emergence of space. Next, we investigate general universes and then narrow down our discussion to one universe, with a detailed discussion of the possibility of describing our real universe classically. Furthermore, a constraint on $Ht$ and an estimated value of ${\tilde{\mathrm{\Omega }}}_{\mathrm{\Lambda }}$ (caused by ${\rho }_{\mathrm{vac}}$) can be derived from our model; a comparison with experiments is also presented. The results show the validity of our model.