Reentrant transition of bosons in a quasiperiodic potential
- Resource Type
- Working Paper
- Authors
- Cetoli, A.; Lundh, E.
- Source
- EPL 90 46001 (2010)
- Subject
- Condensed Matter - Quantum Gases
- Language
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 wavefunction 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 condensate can experience a reentrant transition between a Mott insulating phase and the superfluid one.
Comment: Accepted for publication in EPL