GW SPECTRAL FUNCTIONS OF GD AND NIO

The spectral functions of highly correlated systems Gd and NiO have be en calculated within the GW approximation. In the case of Gd, satellit es are found at the positions of the experimental main peaks. However, some quasiparticle weight remains at the local density eigenvalue but its weight is unusually small (0.3). In NiO, satellite structure is o bserved at around - 10 eV when starting from the local density Hamilto nian. It is found, however, that the satellite intensity is reduced to wards self-consistency and almost disappears.