Stripe-ordered superfluid and supersolid phases in attractive Hofstadter-Hubbard model
arXiv:1406.6890 · doi:10.1103/PhysRevA.91.011601
Abstract
We use microscopic Bogoliubov-de Gennes formalism to explore the ground-state phase diagram of the single-band attractive Hofstadter-Hubbard model on a square lattice. We show that the interplay between the Hofstadter butterfly and superfluidity breaks spatial symmetry, and gives rise to stripe-ordered superfluid and supersolid phases in large parameter spaces. We also discuss the effects of a trapping potential and comment on the viability of observing stripe-ordered phases with cold Fermi gases.
arXiv comment4+ pages with 3 figures; to appear in PRA as RC
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