Finite boson and fermion systems under extreme rotation: edge reconstruction and vortex formation

Maria Toreblad, Yongle Yu, Stephanie Reimann, M. Koskinen, M. Manninen

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Sammanfattning

Vortices can form when finite quantal systems are set rotating. In the limit of small particle numbers, the vortex formation in a harmonically trapped fermion system, with repulsively interacting particles, shows similarities to the corresponding boson system, with vortices entering the rotating cloud for increasing rotation. For a larger number of fermions, N greater than or similar to 15, the fermion vortices compete and co-exist with (Chamon-Wen) edge-reconstructed ground states, forcing some ground states, as for example the central single vortex, into the spectrum of excited states. Experimentally, the fermion system could, for instance, be electrons in a semiconductor heterostructure, a quantum dot, and the corresponding boson system, a Bose-Einstein condensate in a magneto optical trap.
Originalspråkengelska
Sidor (från-till)2721-2735
TidskriftJournal of Physics B: Atomic, Molecular and Optical Physics
Volym39
Utgåva12
DOI
StatusPublished - 2006

Bibliografisk information

The information about affiliations in this record was updated in December 2015.
The record was previously connected to the following departments: Mathematical Physics (Faculty of Technology) (011040002)

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