Quantum phase transitions in a two-species hard-core boson Hubbard model in two dimensions

Pochung Chen*, Min Fong Yang

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

16 Scopus citations

Abstract

We investigate various quantum phase transitions of attractive two-species bosons in a two-dimensional square lattice. Using the algorithm based on the tensor product states, the phase boundaries of the pair-superfluid states with nonzero pair-condensate density and vanishing atomic condensate density are determined. Various quantum phase transitions across the phase boundaries are characterized. Our work thus provides guides to the experimental search of the pair-superfluid phase in lattice boson systems.

Original languageEnglish
Article number180510
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume82
Issue number18
DOIs
StatePublished - 12 11 2010
Externally publishedYes

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