Hydrodynamic theory of rotating ultracold Bose–Einstein condensates in supersolid phase

Hydrodynamic theory of Rotating Ultracold Bose Einstein Condensates in Supersolid Phase

Within mean field Gross-Pitaevskii framework, ultra cold atomic condensates with long range interaction is predicted to have a supersolid like ground state beyond a critical interaction strength. Such mean field supersolid like ground state has periodically modulated superfluid density which implies the coexistence of superfluid and crystalline order. Ultra cold atomic system in such mean field...

Observation of the supersolid stripe phase in spin-orbit coupled Bose-Einstein condensates

Supersolidity is an intriguing concept. It combines the property of superfluid flow with the long-range spatial periodicity of solids 1 , two properties which are often mutually exclusive. The original discussion of quantum crystals 2 and supersolidity focuses on solid Helium-4 where it was predicted that vacancies could form dilute weakly interacting Bose-Einstein condensates 1,3. In this syst...

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 ...

Supersolid vortex crystals in Rydberg-dressed Bose-Einstein condensates.

We study rotating quasi-two-dimensional Bose-Einstein condensates, in which atoms are dressed to a highly excited Rydberg state. This leads to weak effective interactions that induce a transition to a mesoscopic supersolid state. Considering slow rotation, we determine its superfluidity using quantum Monte Carlo simulations as well as mean field calculations. For rapid rotation, the latter reve...

Atomic Condensates Collective Phenomena in Ultracold Gases