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cond-mat.str-el2026
Accelerating a Strong-Coupling Non-Equilibrium Steady-State Impurity Solver using (Quantics) Tensor Trains
Bastian Schindler, Martin Eckstein
Including higher order diagrammatic corrections to the strong-coupling expansion is mainly limited by the evaluation of high-dimensional, time-ordered integrals. In this work we pr…
cond-mat.str-el2026
NESSi 2.0: The Non-Equilibrium Systems Simulation package version 2.0
Fabian Künzel, Michael Schüler, Denis Golež +7
Nonequilibrium Green's functions provide a powerful framework for studying quantum many-body dynamics including the laser-induced dynamics in solids. The Non-Equilibrium Systems Si…