Density-functional theory of strongly correlated Fermi gases in elongated harmonic traps (Articolo in rivista)

Type
Label
  • Density-functional theory of strongly correlated Fermi gases in elongated harmonic traps (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Alternative label
  • Gao, XL; Polini, M; Asgari, R; Tosi, MP (2006)
    Density-functional theory of strongly correlated Fermi gases in elongated harmonic traps
    in Physical review. A
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Gao, XL; Polini, M; Asgari, R; Tosi, MP (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 73 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • CNR, INFM, NEST, I-56126 Pisa, Italy; Scuola Normale Super Pisa, I-56126 Pisa, Italy; Inst Studies Theoret Phys & Math, Tehran 193955531, Iran (literal)
Titolo
  • Density-functional theory of strongly correlated Fermi gases in elongated harmonic traps (literal)
Abstract
  • Two-component Fermi gases with tunable repulsive or attractive interactions inside quasi-one-dimensional (Q1D) harmonic wells may soon become the cleanest laboratory realizations of strongly correlated Luttiger and Luther-Emery liquids under confinement. We present a microscopic Kohn-Sham density-functional theory of these systems, with specific attention to a gas on the approach to a confinement-induced Feshbach resonance. The theory employs the one-dimensional Gaudin-Yang model as the reference system and transfers the appropriate Q1D ground-state correlations to the confined inhomogeneous gas via a suitable local-density approximation to the exchange and correlation energy functional. Quantitative understanding of the role of the interactions in the bulk shell structure of the axial density profile is thereby achieved. While repulsive intercomponent interactions depress the amplitude of the shell structure of the noninteracting gas, attractive interactions stabilize atomic-density waves through spin pairing. These should be clearly observable in atomic clouds containing of the order of up to 100 atoms. (literal)
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