https://doi.org/10.1007/s100530050227
The topological structure of vortex in BEC
Institute of Theoretical Physics, Lanzhou University,
Lanzhou 730000, P.R. China
Received:
9
April
1998
Revised:
28
August
1998
Accepted:
31
August
1998
Published online: 15 January 1999
We find that there exists an elementary topological
current in Bose-Einstein condensation. Based on the 
-mapping
topological current theory, the implicit function theorem and the Taylor
expansion, the topological structure of vortex lines is detailed in the
neighborhoods of the bifurcation points of the condensate wave function.
PACS: 03.75.Fi – Phase coherent atomic ensemble (Bose condensation) / 02.40.Pc – General topology
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 1999
