Ground state properties of one- and two-component Bose-Hubbard model

ORAL

Abstract

We report results for the ground state properties of the single component Bose-Hubbard model and preliminary results for the two-component system at total unity filling factor. Our study is based on exact quantum Monte Carlo simulations by worm algorithm. We compare our answers with those of existing analytic calculations based on strong coupling expansion and mean field theory.

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Authors

  • Barbara Capogrosso-Sansone

    Physics Department, University of Massachusetts, Amherst, University of Massachusetts at Amherst

  • Sebnem Gunes Soyler

    Physics Department, University of Massachusetts, Amherst, University of Massachusetts at Amherst

  • Nikolay Prokof'ev

    University of Massachusetts, Amherst, UMASS Amherst, UMASS, Amherst; ETH Zurich; Kurchatov Institute, Moscow, Physics Department, University of Massachusetts, Amherst, University of Massachusetts at Amherst, University of Massachusetts, Amherst, MA 01003, USA

  • Boris Svistunov

    University of Massachusetts, Amherst, UMASS Amherst, Department of Physics, University of Massachusetts Amherst, UMASS, Amherst; Kurchatov Institute, Moscow, Physics Department, University of Massachusetts, Amherst, University of Massachusetts at Amherst