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Theory of robust quantum many-body scars in long-range interacting systems
Alessio Lerose, Tommaso Parolini, Rosario Fazio +2
Quantum many-body scars (QMBS) are exceptional energy eigenstates of quantum many-body systems associated with violations of thermalization for special non-equilibrium initial stat…
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…
Kagome chiral spin liquid in transition metal dichalcogenide moiré bilayers
Johannes Motruk, Dario Rossi, Dmitry A. Abanin +1
At filling of the moiré flat band, transition metal dichalcogenide moiré bilayers will develop kagome charge order. We derive an effective spin model for the resulting loca…
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…
Influence matrix approach to many-body Floquet dynamics
Alessio Lerose, Michael Sonner, Dmitry A. Abanin
In this work, we introduce an approach to study quantum many-body dynamics, inspired by the Feynman-Vernon influence functional. Focusing on a family of interacting, Floquet spin c…