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Cerenkov-like radiation in a binary Schr{"o}dinger flow past an obstacle | | H. Susanto
; P.G. Kevrekidis
; R. Carretero-Gonzalez
; B.A. Malomed
; D.J. Frantzeskakis
; A.R. Bishop
; | | Date: |
18 Jan 2007 | | Subject: | Soft Condensed Matter | | 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. | | Source: | arXiv, cond-mat/0701435 | | Services: | Forum | Review | PDF | Favorites | |
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