BEC-BCS crossover in an optical lattice

Arnaud Koetsier*, D. B. M. Dickerscheid, H. T. C. Stoof

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

We present the microscopic theory for the BEC-BCS crossover of an atomic Fermi gas in an optical lattice, showing that the Feshbach resonance underlying the crossover in principle induces strong multiband effects. Nevertheless, the BEC-BCS crossover itself can be described by a single-band model since it occurs at magnetic fields that are relatively far away from the Feshbach resonance. A criterion is proposed for the latter, which is obeyed by most known Feshbach resonances in ultracold atomic gases.

Original languageEnglish
Article number033621
Number of pages4
JournalPhysical review. A, Atomic, molecular and optical physics
Volume74
Issue number3
DOIs
Publication statusPublished - Sept 2006

Keywords

  • FERMI GAS
  • SUPERCONDUCTIVITY
  • RESONANCE
  • ATOMS
  • STATE

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