Cerenkov-like radiation in a binary Schr{\"o}dinger flow past an obstacle
Soft Condensed Matter
2010-12-10 v1
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 (2D); in the intermediate regime, we observe the nucleation of a structure in the form of a dark-antidark soliton in 1D; subcritical component; the 2D analog of such a structure, a vortex-lump, is also observed.
Keywords
Cite
@article{arxiv.cond-mat/0701435,
title = {Cerenkov-like radiation in a binary Schr{\"o}dinger flow past an obstacle},
author = {H. Susanto and P. G. Kevrekidis and R. Carretero-Gonzalez and B. A. Malomed and D. J. Frantzeskakis and A. R. Bishop},
journal= {arXiv preprint arXiv:cond-mat/0701435},
year = {2010}
}
Comments
4 pages, 4 figures, submitted to Phys Rev E