Real time Quantum Monte Carlo for out of equilibrium strongly correlated systems.

ORAL

Abstract


We discuss a real time diagrammatic Quantum Monte Carlo for strongly correlated systems, which allows to reach long time steady states. The method yields the expansion of physical quantities in power in the interaction, with a scaling 2n at order n, uniformly in time. We present a systematic method to sum this expansion using conformal transformations and some recent benchmarks on Green functions in quantum impurity models in equilibrium and out of equilibrium.


–

Presenters

  • Olivier Parcollet

    • CCQ, Flatiron Institute, Simons Foundation
    • Flatiron Institute, Simons Foundation
    • CCQ, Flatiron Institute
    • Center for Computational Quantum Physics, Flatiron Institute

Authors

  • Corentin Bertrand

    • INAC, CEA

  • Antoine Maillard

    • Ecole Normale Supérieure

  • Serge Florens

    • CNRS
    • Néel Institute, CNRS and Université Grenoble-Alpes
    • Univ. Grenoble Alpes, CNRS, Grenoble INP, Institut Néel, 38000 Grenoble, France

  • Olivier Parcollet

    • CCQ, Flatiron Institute, Simons Foundation
    • Flatiron Institute, Simons Foundation
    • CCQ, Flatiron Institute
    • Center for Computational Quantum Physics, Flatiron Institute

  • Xavier Waintal

    • INAC, CEA