2 papers
cond-mat.str-el2025
Steady-state dynamical mean field theory based on influence functional matrix product states
Mithilesh Nayak, Julian Thoenniss, Michael Sonner +2
We implement the recently developed influence functional matrix product states approach as impurity solver in equilibrium and nonequilibrium dynamical mean field theory (DMFT) calc…
cond-mat.str-el2024
Efficient Pseudomode Representation and Complexity of Quantum Impurity Models
Julian Thoenniss, Ilya Vilkoviskiy, Dmitry A. Abanin
Out-of-equilibrium fermionic quantum impurity models (QIM), describing a small interacting system coupled to a continuous fermionic bath, play an important role in condensed matter…