Bosonization and entanglement spectrum for one-dimensional polar bosons on disordered lattices

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Deng, Xiaolong; Citro, Roberta; Orignac, Edmond; Minguzzi, Anna; Santos, Luis: Bosonization and entanglement spectrum for one-dimensional polar bosons on disordered lattices. In: New Journal of Physics 15 (2013), 45023. DOI: http://dx.doi.org/10.1088/1367-2630/15/4/045023

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Abstract: 
Ultra cold polar bosons in a disordered lattice potential, described by the extended Bose-Hubbard model, display a rich phase diagram. In the case of uniform random disorder one finds two insulating quantum phases-the Mott-insulator and the Haldane insulator-in addition to a superfluid and a Bose glass phase. In the case of a quasiperiodic potential, further phases are found, e.g. the incommensurate density wave, adiabatically connected to the Haldane insulator. For the case of weak random disorder we determine the phase boundaries using a perturbative bosonization approach. We then calculate the entanglement spectrum for both types of disorder, showing that it provides a good indication of the various phases.
License of this version: CC BY 3.0 Unported
Document Type: article
Publishing status: publishedVersion
Issue Date: 2013-04-26
Appears in Collections:Fakultät für Mathematik und Physik

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pos. country downloads
total perc.
1 image of flag of Germany Germany 134 85.35%
2 image of flag of China China 8 5.10%
3 image of flag of United States United States 2 1.27%
4 image of flag of Canada Canada 2 1.27%
5 image of flag of No geo information available No geo information available 1 0.64%
6 image of flag of Thailand Thailand 1 0.64%
7 image of flag of Poland Poland 1 0.64%
8 image of flag of Nigeria Nigeria 1 0.64%
9 image of flag of India India 1 0.64%
10 image of flag of Hungary Hungary 1 0.64%
    other countries 5 3.18%

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