105 citations · 246 across the 7 of their papers we have counts for
7 papers
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…
Vertex corrections for positive-definite spectral functions of simple metals
Y. Pavlyukh, A. -M. Uimonen, G. Stefanucci +1
We present a systematic study of vertex corrections in the homogeneous electron gas at metallic densities. The vertex diagrams are built using a recently proposed positive-definite…
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…
Charge dynamics in molecular junctions: Nonequilibrium Green's Function approach made fast
S. Latini, E. Perfetto, A. -M. Uimonen +2
Real-time Green's function simulations of molecular junctions (open quantum systems) are typically performed by solving the Kadanoff-Baym equations (KBE). The KBE, however, impose…
Real-time switching between multiple steady-states in quantum transport
A. -M. Uimonen, E. Khosravi, G. Stefanucci +3
We study transport through an interacting model system consisting of a central correlated site coupled to finite bandwidth tight-binding leads, which are considered as effectively…