A QTCI-based one-crossing approximation solver accurately computes impurity self-energies and Green's functions for equilibrium and nonequilibrium steady-state DMFT, at about two orders of magnitude lower cost.
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Strong coupling impurity solver based on quantics tensor cross interpolation
A QTCI-based one-crossing approximation solver accurately computes impurity self-energies and Green's functions for equilibrium and nonequilibrium steady-state DMFT, at about two orders of magnitude lower cost.