Topological parity invariant in interacting two-dimensional systems from quantum Monte Carlo

ORAL

Abstract

We report results on calculating the parity invariant from Green's functions in quantum Monte Carlo simulations of strongly interacting systems. The topological invariant is used to study the trivial- to topological-insulator transitions in the Kane-Mele-Hubbard model with an explicit bond dimerization. We explore accessibility and behavior of this invariant within quantum Monte Carlo simulations.

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Authors

  • Thomas C. Lang

    Department of Physics, Boston University

  • Victor Gurarie

    University of Colorado at Boulder, Department of Physics, University of Colorado

  • Andrew Essin

    Department of Physics, University of Colorado

  • Stefan Wessel

    Institute for Theoretical Solid State Physics, RWTH Aachen University