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Polar bosons in one-dimensional disordered optical lattices

Xiaolong Deng 1 Roberta Citro 2 Edmond Orignac 3 Anna Minguzzi 4 Luis Santos 5
1 ITP - Institut für Theoretische Physik [Hannover]
2 Dipartamento di Fisica "E. R. Caianiello"
3 Phys-ENS - Laboratoire de Physique de l'ENS Lyon
4 LPM2C - Laboratoire de physique et modélisation des milieux condensés
5 Theoretical Quantum Optics Group
ITP - Institut für Theoretische Physik [Hannover]
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.
Keywords : Ultracold atoms dipolar interactions Aubry-André transition Anderson localization
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https://hal-ens-lyon.archives-ouvertes.fr/ensl-00842759
Contributor : Edmond Orignac <>
Submitted on : Tuesday, July 9, 2013 - 12:41:45 PM
Last modification on : Tuesday, July 27, 2021 - 10:52:02 AM

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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 (1998-2015), American Physical Society, 2013, 87 (19), pp.195101. ⟨10.1103/PhysRevB.87.195101⟩. ⟨ensl-00842759⟩

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