Supershell structure in trapped dilute Fermi gases

Yongle Yu, Magnus Ögren, Sven Åberg, Stephanie Reimann, M Brack

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8 Citations (SciVal)


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).
Original languageEnglish
Article number051602
JournalPhysical Review A (Atomic, Molecular and Optical Physics)
Issue number5
Publication statusPublished - 2005

Bibliographical note

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)

Subject classification (UKÄ)

  • Physical Sciences


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