57 citations · 149 across the 8 of their papers we have counts for
8 papers
Quantum interference and the time-dependent radiation of nanojunctions
Michael Ridley, Lev Kantorovich, Robert van Leeuwen +1
Using the recently developed time-dependent Landauer-Büttiker formalism and Jefimenko's retarded solutions to the Maxwell equations, we show how to compute the time-dependent elect…
Electronic transport in molecular junctions: The generalized Kadanoff-Baym ansatz with initial contact and correlations
Riku Tuovinen, Robert van Leeuwen, Enrico Perfetto +1
The generalized Kadanoff-Baym ansatz (GKBA) offers a computationally inexpensive approach to simulate out-of-equilibrium quantum systems within the framework of nonequilibrium Gree…
Diagrammatic Expansion for Positive Spectral Functions in the Steady-State Limit
Markku J. Hyrkäs, Daniel Karlsson, Robert van Leeuwen
Recently, a method was presented for constructing self-energies within many-body perturbation theory that are guaranteed to produce a positive spectral function for equilibrium sys…
Contour calculus for many-particle functions
Markku J. Hyrkäs, Daniel Karlsson, Robert van Leeuwen
In non-equilibrium many-body perturbation theory, Langreth rules are an efficient way to extract real-time equations from contour ones. However, the standard rules are not applicab…
Equilibrium and nonequilibrium many-body perturbation theory: a unified framework based on the Martin-Schwinger hierarchy
Robert van Leeuwen, Gianluca Stefanucci
We present a unified framework for equilibrium and nonequilibrium many-body perturbation theory. The most general nonequilibrium many-body theory valid for general initial states i…
Time-dependent Landauer-Büttiker formula for transient dynamics
Riku Tuovinen, Robert van Leeuwen, Enrico Perfetto +1
We solve analytically the Kadanoff-Baym equations for a noninteracting junction connected to an arbitrary number of noninteracting wide-band terminals. The initial equilibrium stat…