Abstract
We study vortex interaction and a two-dimensional dark soliton in the two-dimensional Gross-Pitaevskii equation. A vortex-antivortex pair propagates with a constant velocity when the initial distance is large. But complicated behaviors appear when the initial distance of two vortices becomes smaller. If the initial distance is sufficiently small, a two-dimensional dark solution is created as a result of the pair annihilation. The two-dimensional dark soliton has an anisotropic structure and propagates in a certain direction. The two-dimensional dark soliton is stable against head-on collision.
Original language | English |
---|---|
Pages (from-to) | 221-225 |
Number of pages | 5 |
Journal | Laser Physics |
Volume | 17 |
Issue number | 2 |
DOIs | |
Publication status | Published - Feb 2007 |
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics
- Instrumentation
- Condensed Matter Physics
- Industrial and Manufacturing Engineering