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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
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
id
0e8f2180-e5c1-4917-855e-12048c28f7bd (old id 647679)
date added to LUP
2007-12-18 17:55:37
date last changed
2017-01-01 07:07:31
@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},
  volume       = {40},
  year         = {2007},
}