Phase diagram of vortices in the polar phase of spin-1 Bose-Einstein condensates

Extraordinary wetting phase diagram for mixtures of Bose-Einstein condensates.

The possibility of wetting phase transitions in Bose-Einstein condensed gases is predicted on the basis of Gross-Pitaevskii theory. The surface of a binary mixture of Bose-Einstein condensates can undergo a first-order wetting phase transition upon varying the interparticle interactions, using, e.g., Feshbach resonances. Interesting ultra-low-temperature effects shape the wetting phase diagram....

Vortex phase diagram in rotating two-component Bose-Einstein condensates.

We investigate the structure of vortex states in rotating two-component Bose-Einstein condensates with equal intracomponent but varying intercomponent-coupling constants. A phase diagram in the intercomponent-coupling versus rotation-frequency plane reveals rich equilibrium structures of vortex states. As the ratio of intercomponent to intracomponent couplings increases, the interlocked vortex ...

Vortices in Bose-Einstein Condensates

A Bose-Einstein condensate (BEC) was only experimentally realised in 1995. Research into nonlinear phenomenon (such as vortices) that exist in a BEC is thus in its infancy and a full understanding of how vortices move and interact is still lacking. A Bose-Einstein condensate is described by the GrossPitaevskii (GP) equation, a semi-classical non-linear PDE, given in terms of a wavefunction. In ...

Vortex-splitting and phase-separating instabilities of coreless vortices in F=1 spinor Bose-Einstein condensates

Phase Separation of Bose-Einstein Condensates

The zero-temperature system of two dilute overlapping Bose-Einstein condensates is unstable against long wavelength excitations if the interaction strength between the distinguishable bosons exceeds the geometric mean of the like-boson interaction strengths. If the condensates attract each other, the instability is similar to the instability of the negative scattering length condensates. If the...