105 citations · 246 across the 7 of their papers we have counts for
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Approximate energy functionals for one-body reduced density matrix functional theory from many-body perturbation theory
Klaas J. H. Giesbertz, Anna-Maija Uimonen, Robert van Leeuwen
We develop a systematic approach to construct energy functionals of the one-particle reduced density matrix (1RDM) for equilibrium systems at finite temperature. The starting point…
Diagrammatic expansion for positive density-response spectra: Application to the electron gas
A. -M. Uimonen, G. Stefanucci, Y. Pavlyukh +1
In a recent paper [Phys. Rev. B 90, 115134 (2014)] we put forward a diagrammatic expansion for the self-energy which guarantees the positivity of the spectral function. In this wor…
Diagrammatic expansion for positive spectral functions beyond GW: Application to vertex corrections in the electron gas
G. Stefanucci, Y. Pavlyukh, A. -M. Uimonen +1
We present a diagrammatic approach to construct self-energy approximations within many-body perturbation theory with positive spectral properties. The method cures the problem of n…