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Supershell structure in trapped dilute Fermi gases

Yu, Yongle LU ; Ögren, Magnus LU ; Åberg, Sven LU ; Reimann, Stephanie LU and Brack, M (2005) In Physical Review A (Atomic, Molecular and Optical Physics) 72(5).
Abstract
We show that a dilute harmonically trapped two-component gas of fermionic atoms with a weak repulsive interaction has a pronounced super-shell structure: The shell fillings due to the spherical harmonic trapping potential are modulated by a beat mode. This changes the "magic numbers" occurring between the beat nodes by half a period. The length and amplitude of this beating mode depend on the strength of the interaction. We give a simple interpretation of the beat structure in terms of a semiclassical trace formula for the symmetry breaking U(3)-> SO(3).
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author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review A (Atomic, Molecular and Optical Physics)
volume
72
issue
5
article number
051602
publisher
American Physical Society
external identifiers
  • wos:000233603400016
  • scopus:28844501818
ISSN
1050-2947
DOI
10.1103/PhysRevA.72.051602
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
b55a244e-6d4a-441d-9a5e-22b1ebf677ec (old id 211426)
date added to LUP
2016-04-01 11:46:55
date last changed
2020-12-08 01:49:47
@article{b55a244e-6d4a-441d-9a5e-22b1ebf677ec,
  abstract     = {We show that a dilute harmonically trapped two-component gas of fermionic atoms with a weak repulsive interaction has a pronounced super-shell structure: The shell fillings due to the spherical harmonic trapping potential are modulated by a beat mode. This changes the "magic numbers" occurring between the beat nodes by half a period. The length and amplitude of this beating mode depend on the strength of the interaction. We give a simple interpretation of the beat structure in terms of a semiclassical trace formula for the symmetry breaking U(3)-> SO(3).},
  author       = {Yu, Yongle and Ögren, Magnus and Åberg, Sven and Reimann, Stephanie and Brack, M},
  issn         = {1050-2947},
  language     = {eng},
  number       = {5},
  publisher    = {American Physical Society},
  series       = {Physical Review A (Atomic, Molecular and Optical Physics)},
  title        = {Supershell structure in trapped dilute Fermi gases},
  url          = {http://dx.doi.org/10.1103/PhysRevA.72.051602},
  doi          = {10.1103/PhysRevA.72.051602},
  volume       = {72},
  year         = {2005},
}