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

Toreblad, Maria LU ; Yu, Yongle LU ; Reimann, Stephanie LU ; Koskinen, M. and Manninen, M. (2006) In Journal of Physics B: Atomic, Molecular and Optical Physics 39(12). p.2721-2735
Abstract
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... (More)
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. (Less)
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type
Contribution to journal
publication status
published
subject
in
Journal of Physics B: Atomic, Molecular and Optical Physics
volume
39
issue
12
pages
2721 - 2735
publisher
IOP Publishing
external identifiers
  • wos:000239306700011
  • scopus:33745089601
ISSN
0953-4075
DOI
10.1088/0953-4075/39/12/008
language
English
LU publication?
yes
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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)
id
22543a66-02bf-41cc-9c9c-4f8622dec9f1 (old id 399453)
date added to LUP
2016-04-01 15:46:14
date last changed
2020-08-12 06:08:09
@article{22543a66-02bf-41cc-9c9c-4f8622dec9f1,
  abstract     = {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.},
  author       = {Toreblad, Maria and Yu, Yongle and Reimann, Stephanie and Koskinen, M. and Manninen, M.},
  issn         = {0953-4075},
  language     = {eng},
  number       = {12},
  pages        = {2721--2735},
  publisher    = {IOP Publishing},
  series       = {Journal of Physics B: Atomic, Molecular and Optical Physics},
  title        = {Finite boson and fermion systems under extreme rotation: edge reconstruction and vortex formation},
  url          = {http://dx.doi.org/10.1088/0953-4075/39/12/008},
  doi          = {10.1088/0953-4075/39/12/008},
  volume       = {39},
  year         = {2006},
}