Critical Properties of Strongly Interacting Bosons on a Lattice

  • G. G. Batrouni
Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 72)

Abstract

We use quantum Monte Carlo techniques to study the critical properties of an interacting boson model in one dimension with and without disorder. In the absence of disorder, the phase diagram consists of a Mott insulating phase at commensurate fillings and a superfluid phase. The effect of disorder is to shrink the Mott insulator phase and to cause the emergence of two new insulating regions. Our simulations are the first to demonstrate the existence and study the properties of the predicted “Bose glass” phase as well as an unanticipated Anderson-like insulating regime. For the uniform system, we study the critical behaviour of the superfluid density and the compressibility, and measure the exponents v and z, which agree with predictions based on a scaling analysis.

Keywords

Sugar Compressibility Haldane 

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Copyright information

© Springer-Verlag Berlin Heidelberg 1993

Authors and Affiliations

  • G. G. Batrouni
    • 1
  1. 1.Lawrence Livermore National LaboratoryLivermoreUSA

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