2 papers
cond-mat.mtrl-sci1998
Spectra and total energies from self-consistent many-body perturbation theory
Arno Schindlmayr, Thomas J. Pollehn, R. W. Godby
With the aim of identifying universal trends, we compare fully self-consistent electronic spectra and total energies obtained from the GW approximation with those from an extended…
cond-mat.mtrl-sci1997
Assessment of the GW approximation using Hubbard chains
Thomas J. Pollehn, Arno Schindlmayr, R. W. Godby
We investigate the performance of the GW approximation by comparison to exact results for small model systems. The role of the chemical potentials in Dyson's equation as well as th…