Attractive Fermi Gases with Unequal Spin Populations in Highly Elongated Traps
- BEC-INFM and Dipartimento di Fisica, Universita di Trento, 1-38050 Povo (Italy)
We investigate two-component attractive Fermi gases with imbalanced spin populations in trapped one-dimensional configurations. The ground state properties are determined with the local density approximation, starting from the exact Bethe-ansatz equations for the homogeneous case. We predict that the atoms are distributed according to a two-shell structure: a partially polarized phase in the center of the trap and either a fully paired or a fully polarized phase in the wings. The partially polarized core is expected to be a superfluid of the Fulde-Ferrell-Larkin-Ovchinnikov type. The size of the cloud as well as the critical spin polarization needed to suppress the fully paired shell are calculated as a function of the coupling strength.
- OSTI ID:
- 20955455
- Journal Information:
- Physical Review Letters, Vol. 98, Issue 7; Other Information: DOI: 10.1103/PhysRevLett.98.070402; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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