TY - JOUR
T1 - Čerenkov-like radiation in a binary superfluid flow past an obstacle
AU - Susanto, H.
AU - Kevrekidis, P. G.
AU - Carretero-González, R.
AU - Malomed, B. A.
AU - Frantzeskakis, D. J.
AU - Bishop, A. R.
PY - 2007/5/8
Y1 - 2007/5/8
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=34347355364&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.75.055601
DO - 10.1103/PhysRevA.75.055601
M3 - Article
AN - SCOPUS:34347355364
SN - 1050-2947
VL - 75
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 5
M1 - 055601
ER -