▎ 摘　　要

Accurate simulations of Green's function and the self-energy function for noninteracting electrons in disordered graphenes are performed. The fundamental physical quantities such as the elastic relaxation time tau(e), the phase velocity v(p), and the group velocity v(g) are evaluated. New features around the Dirac point are revealed, indicating that multiscattering-induced hybridization of Bloch states plays an important role in the vicinity of the Dirac point.