  We study electron correlations in the half-filled Hubbard model on
two-dimensional Penrose lattice. Applying the real-space dynamical mean-field
theory to large clusters, we discuss how low-temperature properties are
affected by the quasiperiodic structure. By calculating the double occupancy
and renormalization factor at each site, we clarify the existence of the Mott
transition. The spatially-dependent renormalization characteristic of
geometrical structure is also addressed.
