Super-shell structures and pairing in ultracold trapped Fermi gases

Details Super-shell structures and pairing in ultracold trapped Fermi gases Super-shell structures and pairing in ultracold trapped Fermi gases

2007-04-03

arxiv.org/abs/0704.0385v1

Phys. Rev. A 76, 021601(R) (2007)

Physics

Condensed Matter

Other Condensed Matter

4 pages, 2 figures.

Scientific paper

10.1103/PhysRevA.76.021601

We calculate level densities and pairing gaps for an ultracold dilute gas of fermionic atoms in harmonic traps under the influence of mean field and anharmonic quartic trap potentials. Super-shell structures, which were found in Hartree-Fock calculations, are calculated analytically within periodic orbit theory as well as from WKB calculations. For attractive interactions, the underlying level densities are crucial for pairing and super-shell structures in gaps are predicted.

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