Universal vortex formation in rotating traps with bosons and fermions
Abstract
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 He or fermionic 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.
Keywords
Cite
@article{arxiv.cond-mat/0404039,
title = {Universal vortex formation in rotating traps with bosons and fermions},
author = {M. Toreblad and M. Borgh and M. Koskinen and M. Manninen and S. M. Reimann},
journal= {arXiv preprint arXiv:cond-mat/0404039},
year = {2009}
}
Comments
4 pages, 4 figures