H-NESSi uses HODLR compression of Green's functions plus DLR for initial states to reduce Kadanoff-Baym equation propagation from cubic to lower scaling while preserving controllable accuracy.
Low rank compression in the numerical solution of the nonequilibrium Dyson equation.SciPost Phys., 10:091, 2021
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H-NESSi: The Hierarchical Non-Equilibrium Systems Simulation package
H-NESSi uses HODLR compression of Green's functions plus DLR for initial states to reduce Kadanoff-Baym equation propagation from cubic to lower scaling while preserving controllable accuracy.