Physics – Condensed Matter – Quantum Gases
Scientific paper
2011-07-20
J. Phys. B: At. Mol. Opt. Phys. 44 (2011) 191003
Physics
Condensed Matter
Quantum Gases
Scientific paper
10.1088/0953-4075/44/19/191003
We study dark-bright ring solitons in two-component Bose-Einstein condensates. In the limit of large densities of the dark component, we describe the soliton dynamics by means of an equation of motion for the ring radius. The presence of the bright, "filling" species is demonstrated to have a stabilizing effect on the ring dark soliton. Near the linear limit, we discuss the symmetry-breaking bifurcations of dark-bright soliton stripes and vortex-bright soliton clusters from the dark-bright ring and relate the stabilizing effect of filling to changes in the bifurcation diagram. Finally, we show that stabilization by means of a second component is not limited to the radially symmetric structures, but can also be observed in a cross-like dark-bright soliton configuration.
Frantzeskakis Dimitri J.
Kevrekidis Panagiotis G.
Schmelcher Peter
Stockhofe J.
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