6533b834fe1ef96bd129e235
RESEARCH PRODUCT
Universal vortex formation in rotating traps with bosons and fermions.
Stephanie ReimannMaria TorebladMagnus O. BorghM. ManninenM Koskinensubject
Condensed Matter::Quantum GasesPhysicsStatistical Mechanics (cond-mat.stat-mech)Condensed Matter - Mesoscale and Nanoscale PhysicsCondensed matter physicsFOS: Physical sciencesGeneral Physics and AstronomyTourbillonStatistical mechanicsFermionRotationVortexPhysics::Fluid DynamicsCondensed Matter::SuperconductivityMesoscale and Nanoscale Physics (cond-mat.mes-hall)Wave functionQuantumCondensed Matter - Statistical MechanicsBosondescription
When a system consisting of many interacting particles is set rotating, it may form vortices. This is familiar to us from every-day life: you can observe vortices while stirring your coffee or watching a hurricane. In the world of quantum mechanics, famous examples of vortices are superconducting films and rotating bosonic $^4$He or fermionic $^3$He liquids. Vortices are also observed in rotating Bose-Einstein condensates in atomic traps and are predicted to exist for paired fermionic atoms. Here we show that the rotation of trapped particles with a repulsive interaction leads to a similar vortex formation, regardless of whether the particles are bosons or (unpaired) fermions. The exact, quantum mechanical many-particle wave function provides evidence that in fact, the mechanism of this vortex formation is the same for boson and fermion systems.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2004-04-02 | Physical review letters |