Variational study of hard-core bosons in a two-dimensional optical lattice using projected entangled pair states

V. Murg, F. Verstraete, J. I. Cirac

Publications: Contribution to journalArticlePeer Reviewed

Abstract

We have studied the system of hard-core bosons on a two-dimensional optical lattice using a variational algorithm based on projected entangled-pair states. We have investigated the ground-state properties of the system as well as the responses of the system to sudden changes in the parameters. We have compared our results to mean-field results based on a Gutzwiller ansatz.
Original languageEnglish
Article number033605
Number of pages8
JournalPhysical Review A
Volume75
Issue number3
DOIs
Publication statusPublished - Mar 2007

Austrian Fields of Science 2012

  • 103025 Quantum mechanics

Keywords

  • ULTRACOLD ATOMS
  • TRANSITION
  • SUPERFLUID
  • INSULATOR
  • GAS

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