Polar bosons in one-dimensional disordered optical lattices

Abstract : We analyze the effects of disorder and quasi-disorder on the ground-state properties of ultra-cold polar bosons in optical lattices. We show that the interplay between disorder and inter-site 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 quasi-disorder, the Haldane insulator connects with a gapped generalized incommesurate density wave without an intermediate critical region.
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Contributor : Edmond Orignac <>
Submitted on : Tuesday, July 9, 2013 - 12:41:45 PM
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Xiaolong Deng, Roberta Citro, Edmond Orignac, Anna Minguzzi, Luis Santos. Polar bosons in one-dimensional disordered optical lattices. Physical Review B : Condensed matter and materials physics, American Physical Society, 2013, 87 (19), pp.195101. ⟨10.1103/PhysRevB.87.195101⟩. ⟨ensl-00842759⟩



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