paper

Cross-symmetric dipolar-matter-wave solitons in double-well chains

arXiv:1612.09163 · doi:10.1103/PhysRevE.95.032226

Abstract

We consider a dipolar Bose-Einstein condensate trapped in an array of two-well systems with an arbitrary orientations of the dipoles relative to the system's axis. The system can be built as a chain of local traps sliced into two parallel lattices by a repelling laser sheet. It is modelled by a pair of coupled discrete Gross-Pitaevskii equations, with dipole-dipole self- and cross-interactions. When the dipoles are not polarized perpendicular or parallel to the lattice, the cross-interaction is asymmetric, replacing the familiar symmetric two-component discrete solitons by two new species of cross-symmetric ones, on-site- and off-site-centered, which are strongly affected by the orientation of the dipoles and separation between the parallel lattices. A very narrow region of intermediate asymmetric discrete solitons is found at the boundary between the on- and off-site families. Two different types of solitons in the %-symmetric version of the system are constructed too, and stability areas are identified for them.

arXiv comment13 pages, 12 figures, 72 References, Physical Review E, in press

References in corpus (87)

Cited by in corpus (7)