Matter-wave dark solitons in a double-well potential
| dc.creator | Ichihara, Ryoko | |
| dc.creator | Danshita, Ippei | |
| dc.creator | Nikuni, Tetsuro | |
| dc.date | 2008-09-12 | |
| dc.date.accessioned | 2026-07-07T12:12:18Z | |
| dc.date.available | 2026-07-07T12:12:18Z | |
| dc.description | We study stability of the first excited state of quasi-one-dimensional Bose-Einstein condensates in a double-well potential, which is called "$π$-state". The density notch in the $π$-state can be regarded as a standing dark soliton. From the excitation spectrum, we determine the critical barrier height, above which the $π$-state is dynamically unstable. We find that the critical barrier height decreases monotonically as the number of condensate atoms increases. We also simulate the dynamics of the $π$-state by solving the time-dependent Gross-Pitaevskii equation. We show that due to the dynamical instability the dark soliton starts to move away from the trap center and exhibits a large-amplitude oscillation. | |
| dc.description | 6 pages, 8 figures | |
| dc.identifier | https://arxiv.org/abs/0809.2216 | |
| dc.identifier | http://arxiv.org/abs/0809.2216 | |
| dc.identifier | Phys. Rev. A 78, 063604 (2008) | |
| dc.identifier | doi:10.1103/PhysRevA.78.063604 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/210504 | |
| dc.subject | Other Condensed Matter | |
| dc.title | Matter-wave dark solitons in a double-well potential | |
| dc.type | text |