Stationary states of Bose-Einstein condensed atoms rotating in an asymmetric ring potentialShow others and affiliations
2021 (English)In: Journal of Physics B: Atomic, Molecular and Optical Physics, ISSN 0953-4075, E-ISSN 1361-6455, Vol. 54, no 14, article id 145303Article in journal (Refereed) Published
Abstract [en]
We consider a Bose-Einstein condensate, which is confined ina very tight toroidal/annular trap,in the presence of a potential, which breaks the axial symmetry of the Hamiltonian. We investigate the stationary states of the condensate, when its density distribution co-rotates with the symmetry-breaking potential. As the strength of the potential increases, we have a gradual transition from vortex excitation to solid-body-like motion. Of particular importance are states where the system is static and yet it has a nonzero current/circulation, which is a realization of persistentcurrents/reflectionless potentials.
Place, publisher, year, edition, pages
IOP Publishing , 2021. Vol. 54, no 14, article id 145303
National Category
Atom and Molecular Physics and Optics
Research subject
Physics
Identifiers
URN: urn:nbn:se:oru:diva-93132DOI: 10.1088/1361-6455/ac1647ISI: 000686190700001Scopus ID: 2-s2.0-85114047862OAI: oai:DiVA.org:oru-93132DiVA, id: diva2:1581650
Funder
Magnus Bergvall Foundation
Note
Funding agency:
Örebro University ORU-RR-2020/2021
2021-07-232021-07-232023-12-08Bibliographically approved