Self-trapping of a Fermi superfluid in a double-well potential in the Bose-Einstein-condensate-unitarity crossover

Journal Article · Tue Dec 15 04:00:00 EST 2009 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.80.063607· OSTI ID:21352399

Adhikari, S K ^[1]; Hong, Lu ^[2]; Han, Pu ^[1]

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1. Instituto de Fisica Teorica, Sao Paulo State University (UNESP), 01.140-070 Sao Paulo, SP (Brazil)
2. Department of Physics and Astronomy, and Rice Quantum Institute, Rice University, Houston, Texas 77251 (United States)

We derive a generalized Gross-Pitaevskii density-functional equation appropriate to study the Bose-Einstein condensate (BEC) of dimers formed of singlet spin-half Fermi pairs in the BEC-unitarity crossover while the dimer-dimer scattering length a changes from 0 to infinity. Using an effective one-dimensional form of this equation, we study the phenomenon of dynamical self-trapping of a cigar-shaped Fermi superfluid in the entire BEC-unitarity crossover in a double-well potential. A simple two-mode model is constructed to provide analytical insights. We also discuss the consequence of our study on the self-trapping of an atomic BEC in a double-well potential.

• OSTI ID: 21352399
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 6 Vol. 80; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANGULAR MOMENTUM
BOSE-EINSTEIN CONDENSATION
CALCULATION METHODS
DENSITY FUNCTIONAL METHOD
DIMENSIONS
DIMERS
EQUATIONS
FERMIONS
LENGTH
ONE-DIMENSIONAL CALCULATIONS
PARTICLE PROPERTIES
POTENTIALS
SCATTERING LENGTHS
SPIN
SUPERFLUIDITY
TRAPPING
UNITARITY
VARIATIONAL METHODS