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On the spin asymmetry of ground states in trapped two-component Fermi gases with repulsive interactions

Ögren, Magnus LU ; Kärkkäinen, Kimmo LU ; Yu, Yongle LU and Reimann, Stephanie LU (2007) In Journal of Physics B: Atomic, Molecular and Optical Physics 40(13). p.2653-2660
Abstract
We examine the spin asymmetry of ground states for two-dimensional, harmonically trapped two-component gases of fermionic atoms at zero temperature with weakly repulsive short-range interactions. Our main result is that, in contrast to the three-dimensional case, in two dimensions a non-trivial spin-asymmetric phase can only be caused by the shell structure. A simple, qualitative description is given in terms of an approximate single-particle model, comparing well to the standard results of Hartree-Fock or direct diagonalization methods.
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author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Physics B: Atomic, Molecular and Optical Physics
volume
40
issue
13
pages
2653 - 2660
publisher
IOP Publishing
external identifiers
  • wos:000247578800012
  • scopus:34547463067
ISSN
0953-4075
DOI
10.1088/0953-4075/40/13/010
language
English
LU publication?
yes
additional info
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
0e8f2180-e5c1-4917-855e-12048c28f7bd (old id 647679)
date added to LUP
2016-04-01 16:31:00
date last changed
2022-03-22 19:15:22
@article{0e8f2180-e5c1-4917-855e-12048c28f7bd,
  abstract     = {{We examine the spin asymmetry of ground states for two-dimensional, harmonically trapped two-component gases of fermionic atoms at zero temperature with weakly repulsive short-range interactions. Our main result is that, in contrast to the three-dimensional case, in two dimensions a non-trivial spin-asymmetric phase can only be caused by the shell structure. A simple, qualitative description is given in terms of an approximate single-particle model, comparing well to the standard results of Hartree-Fock or direct diagonalization methods.}},
  author       = {{Ögren, Magnus and Kärkkäinen, Kimmo and Yu, Yongle and Reimann, Stephanie}},
  issn         = {{0953-4075}},
  language     = {{eng}},
  number       = {{13}},
  pages        = {{2653--2660}},
  publisher    = {{IOP Publishing}},
  series       = {{Journal of Physics B: Atomic, Molecular and Optical Physics}},
  title        = {{On the spin asymmetry of ground states in trapped two-component Fermi gases with repulsive interactions}},
  url          = {{http://dx.doi.org/10.1088/0953-4075/40/13/010}},
  doi          = {{10.1088/0953-4075/40/13/010}},
  volume       = {{40}},
  year         = {{2007}},
}