Persistent currents in a toroidal trap
Juha Javanainen, Sun Mok Paik, Sung Mi Yoo
Using elementary microscopic methods, we theoretically study persistent flow of an alkali-metal vapor Bose-Einstein condensate around a tight toroidal trap. The angular velocity of a persistent current must be smaller than the angular frequency of the lowest condensate excitation. A supercurrent may be excited by rotating a perturbing potential that is strong enough to cut the toroidal condensate.
Physical Review A•Jul 1, 1998•36 citations