Separability of dynamical and nonlocal correlations in three dimensions
Separability of dynamical and nonlocal correlations in three dimensions
While second-order phase transitions always cause strong nonlocal fluctuations, their effect on spectral properties crucially depends on the dimensionality. For the important case of three dimensions, we show that the electron self-energy is well separable into a local dynamical part and static nonlocal contributions. In particular, our nonperturbative many-body calculations …