74 citations · 223 across the 6 of their papers we have counts for
6 papers
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…
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…
Equilibrium Quantum Impurity Problems via Matrix Product State Encoding of the Retarded Action
Benedikt Kloss, Julian Thoenniss, Michael Sonner +6
In the dimensional imaginary-time path integral formulation of quantum impurity problems, the retarded action encodes the hybridization of the impurity with the bath. In this…
An efficient method for quantum impurity problems out of equilibrium
Julian Thoenniss, Michael Sonner, Alessio Lerose +1
We introduce an efficient method to simulate dynamics of an interacting quantum impurity coupled to non-interacting fermionic reservoirs. Viewing the impurity as an open quantum sy…
Non-equilibrium quantum impurity problems via matrix-product states in the temporal domain
Julian Thoenniss, Alessio Lerose, Dmitry A. Abanin
Describing a quantum impurity coupled to one or more non-interacting fermionic reservoirs is a paradigmatic problem in quantum many-body physics. While historically the focus has b…
Temporal entanglement, quasiparticles and the role of interactions
Giacomo Giudice, Giuliano Giudici, Michael Sonner +4
In quantum many-body dynamics admitting a description in terms of non-interacting quasiparticles, the Feynman-Vernon influence matrix (IM), encoding the effect of the system on the…