Re-entrant transition of bosons in a quasiperiodic potential
2010 (English)In: European Physics Letters, Vol. 90, no 4, 46001-46005 p.Article in journal (Refereed) Published
We investigate the behavior of a two-dimensional array of Bose-Einstein condensate tubes described by means of a Bose-Hubbard Hamiltonian. Using a Wannier function expansion for the wave function in each tube, we compute the Bose-Hubbard parameters related to two different longitudinal potentials, periodic and quasiperiodic. We predict that—upon increasing the external potential strength along the direction of the tubes—the system can experience a re-entrant transition between a Mott insulating phase and the superfluid one.
Place, publisher, year, edition, pages
2010. Vol. 90, no 4, 46001-46005 p.
IdentifiersURN: urn:nbn:se:umu:diva-38892DOI: 10.1209/0295-5075/90/46001ISI: 000279119200017OAI: oai:DiVA.org:umu-38892DiVA: diva2:384319