Langevin dynamics for linear scaling quantum Monte Carlo

ORAL

Abstract

We discuss recent advances in quantum Monte Carlo (QMC) sampling for models of interacting electrons. A shortcoming of traditional determinant QMC is its cubic scaling with system size. The alternative Langevin approach offers, in principle, linear scaling. With some new tricks, the Langevin method can be very competitive with determinant QMC. Applications to the Holstein model of electron-phonon interactions will be presented.

*Support was provided by the LANL LDRD program and the DOE/BES COMSCOPE project.

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Presenters

  • Kipton Barros

    • Theoretical Division and CNLS, Los Alamos National Laboratory
    • Los Alamos Natl Lab

Authors

  • Kipton Barros

    • Theoretical Division and CNLS, Los Alamos National Laboratory
    • Los Alamos Natl Lab

  • Benjamin Cohen-Stead

    • University of California, Davis
    • Physics, UC Davis

  • George Batrouni

    • Universite Cote d’Azur, INPHYNI, CNRS, 0600 Nice, France
    • Université Côte d’Azur, CNRS
    • Université Côte d'Azur
    • Institut de Physique de Nice, Universite de Nice-Sophia Antipolis

  • Richard Theodore Scalettar

    • University of California, Davis
    • Physics, UC Davis
    • UC Davis