Correlation effects on atom-density profiles of one- and two-dimensional polarized atomic Fermi gases loaded on an optical lattice

M. Machida, S. Yamada, M. Okumura, Y. Ohashi, H. Matsumoto

研究成果: Article査読

16 被引用数 (Scopus)

抄録

We investigate effects of optical lattice potential in one- and two-dimensional two-component trapped Fermi gases with population imbalances. Using the exact diagonalization and the density matrix renormalization group methods complementarily, we calculate the atom-density profile from the ground state many-body wave function as a function of attractive interaction strength for various population imbalances. The numerical results reveal that although a phase separation between the superfluid core and the shell cloud of excess atoms occurs as observed in experiments without the optical lattice, the population imbalance generally remains in the core region in contrast to the nonlattice cases. The essence of the numerical results in a strong attractive regime can be explained by an effective model composed of Cooper pairs and excess major fermions.

本文言語English
論文番号053614
ジャーナルPhysical Review A - Atomic, Molecular, and Optical Physics
77
5
DOI
出版ステータスPublished - 2008 5月 28

ASJC Scopus subject areas

  • 原子分子物理学および光学

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