197 citations · 313 across the 8 of their papers we have counts for
5 papers · 1 filter
Two-Time Quantum Fluctuations Approach and its Relation to the Bethe--Salpeter Equation
Erik Schroedter, Michael Bonitz
Correlated quantum many-particle systems out of equilibrium are of high interest in many fields, including correlated solids, ultracold atoms or dense plasmas. Accurate theoretical…
Accelerating Nonequilibrium Green functions simulations: the G1-G2 scheme and beyond
Michael Bonitz, Jan-Philip Joost, Christopher Makait +3
The theory of Nonequilibrium Green functions (NEGF) has seen a rapid development over the recent three decades. Applications include diverse correlated many-body systems in and out…
Ultrafast Dynamics of Strongly Correlated Fermions -- Nonequilibrium Green Functions and Selfenergy Approximations
N. Schluenzen, S. Hermanns, M. Scharnke +1
This article presents an overview on recent progress in the theory of nonequilibrium Green functions (NEGF). NEGF, presently, are the only \textit{ab-initio} quantum approach that…
Toward a Nonequilibrium Green functions approach to diffusion in strongly coupled finite quantum systems
M. Bonitz, N. Schluenzen, S. Hermanns
Transport properties of strongly correlated quantum systems are of central interest in condensed matter, ultracold atoms and in dense plasmas. There, the proper treatment of strong…
Electronic double-excitations in quantum wells: solving the two-time Kadanoff-Baym equations
K. Balzer, S. Hermanns, M. Bonitz
For a quantum many-body system, the direct population of states of double-excitation character is a clear indication that correlations importantly contribute to its nonequilibrium…