Publication Date
2007
Journal or Book Title
Physics Review A
Abstract
We consider the dynamics of two coupled miscible Bose-Einstein condensates, when an obstacle is dragged through them. The existence of two different speeds of sound provides the possibility for three dynamical regimes: when both components are subcritical, we do not observe nucleation of coherent structures; when both components are supercritical they both form dark solitons in one dimension (1D) and vortices or rotating vortex dipoles in two dimensions; in the intermediate regime, we observe the nucleation of a structure in the form of a dark-antidark soliton in 1D; the 2D analog of such a structure, a vortex-lump, is also observed.
Volume
75
Issue
5
Recommended Citation
Susanto, H and Kevrekidis, PG, "Čerenkov-like radiation in a binary superfluid flow past an obstacle" (2007). Physics Review A. 1137.
Retrieved from https://scholarworks.umass.edu/math_faculty_pubs/1137
Comments
This is the pre-published version harvested from arXiv. The published version is located at http://pra.aps.org/abstract/PRA/v75/i5/e055601