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Journal articles
Bosonization and entanglement spectrum for one-dimensional polar bosons on disordered lattices
Abstract : The extended Bose-Hubbard model subjected to a disordered potential is predicted to 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, eg 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.
https://hal-ens-lyon.archives-ouvertes.fr/ensl-00842755
Contributor : Edmond Orignac Connect in order to contact the contributor
Submitted on : Tuesday, July 9, 2013 - 12:35:22 PM
Last modification on : Wednesday, October 20, 2021 - 1:51:42 AM
Contributor : Edmond Orignac Connect in order to contact the contributor
Submitted on : Tuesday, July 9, 2013 - 12:35:22 PM
Last modification on : Wednesday, October 20, 2021 - 1:51:42 AM
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