Publications (33)
Theory of elementary excitations in unstable Bose-Einstein condensates
U. Leonhardt, T. Kiss, P. Ohberg
Like classical fluids, quantum gases may suffer from hydrodynamic instabilities. Our paper develops a quantum version of the classical stability analysis in fluids, the Bogoliubov…
Low-energy elementary excitations of a trapped Bose-condensed gas
P. Ohberg, E. L. Surkov, I. Tittonen +3
Bogolyubov-De Gennes equations for the excitations of a Bose condensate in the Thomas-Fermi regime in harmonic traps of any asymmetry and introduce a classification of eigenstates.…
Chiral confinement in quasirelativistic Bose-Einstein condensates
M. Merkl, A. Jacob, F. E. Zimmer +2
In the presence of a laser-induced spin-orbit coupling an interacting ultra cold spinor Bose-Einstein condensate may acquire a quasi-relativistic character described by a non-linea…
From Anderson to anomalous localization in cold atomic gases with effective spin-orbit coupling
M. J. Edmonds, J. Otterbach, R. G. Unanyan +3
We study the dynamics of a one-dimensional spin-orbit coupled Schrodinger particle with two internal components moving in a random potential. We show that this model can be impleme…
Optical Analog of the Iordanskii Force in a Bose-Einstein Condensate
U. Leonhardt, P. Ohberg
A vortex in a Bose-Einstein condensate generates the optical analog of the Aharonov-Bohm effect when illuminated with slow light. In contrast to the original Aharonov-Bohm effect t…
Dark solitons in a two-component Bose-Einstein condensate
P. Ohberg, L. Santos
The creation and interaction of dark solitons in a two-component Bose-Einstein condensate is investigated. For a miscible case, the interaction of dark solitons in different compon…