We analyze the effects of disorder and quasidisorder on the ground-state properties of ultracold polar bosons in optical lattices.We showthat the interplay between disorder and intersite interactions leads to rich phase diagrams. A uniform disorder leads to a Haldane-insulator phase with finite parity order, whereas the density-wave phase becomes a Bose glass at very weak disorder. For quasidisorder, the Haldane insulator connects with a gapped generalized incommensurate density wave without an intermediate critical region.

Polar bosons in one-dimensional disordered optical lattices

CITRO, Roberta;
2013-01-01

Abstract

We analyze the effects of disorder and quasidisorder on the ground-state properties of ultracold polar bosons in optical lattices.We showthat the interplay between disorder and intersite interactions leads to rich phase diagrams. A uniform disorder leads to a Haldane-insulator phase with finite parity order, whereas the density-wave phase becomes a Bose glass at very weak disorder. For quasidisorder, the Haldane insulator connects with a gapped generalized incommensurate density wave without an intermediate critical region.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11386/3953203
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