5 papers
Real-time Dyson expansion for the nonequilibrium approximation: Correlated spectra and dependence on the reference propagator
Erik Schroedter, Jan-Philip Joost, Michael Bonitz +1
Electronic spectra provide direct insight into the excitations and correlations of condensed matter systems. Their description requires electron correlations beyond mean field. In…
Nonequilibrium Green Functions Simulations for Large Correlated Systems
Erik Schroedter, Michael Bonitz, Jan-Philip Joost
Correlated real-time dynamics in large, spatially inhomogeneous quantum systems remain difficult to access with nonequilibrium many-body methods. Two-time nonequilibrium Green func…
Classical and Quantum Theory of Fluctuations for Many-Particle Systems out of Equilibrium
Erik Schroedter, Michael Bonitz
Correlated classical and quantum many-particle systems out of equilibrium are of high interest in many fields, including dense plasmas, correlated solids, and ultracold atoms. Accu…
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…