Details
| Original language | English |
|---|---|
| Article number | 045023 |
| Journal | New Journal of Physics |
| Volume | 15 |
| Publication status | Published - Apr 2013 |
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.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- General Physics and Astronomy
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In: New Journal of Physics, Vol. 15, 045023, 04.2013.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Bosonization and entanglement spectrum for one-dimensional polar bosons on disordered lattices
AU - Deng, Xiaolong
AU - Citro, Roberta
AU - Orignac, Edmond
AU - Minguzzi, Anna
AU - Santos, Luis
PY - 2013/4
Y1 - 2013/4
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84877803969&partnerID=8YFLogxK
U2 - 10.1088/1367-2630/15/4/045023
DO - 10.1088/1367-2630/15/4/045023
M3 - Article
AN - SCOPUS:84877803969
VL - 15
JO - New Journal of Physics
JF - New Journal of Physics
SN - 1367-2630
M1 - 045023
ER -