Resonant pairing between fermions with unequal masses

Journal Article · Fri Dec 01 00:00:00 EST 2006 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PHYSREVB.74.224504· OSTI ID:20853967

Wu, Shin-Tza; Pao, C -H; Yip, S -K ^[1]

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1. Department of Physics, National Chung Cheng University, Chiayi 621, Taiwan (China)

We study via mean-field theory the pairing between fermions of different masses, especially at the unitary limit. At equal populations, the thermodynamic properties are identical with the equal mass case provided an appropriate rescaling is made. At unequal populations, for sufficiently light majority species, the system does not phase separate. For sufficiently heavy majority species, the phase separated normal phase have a density larger than that of the superfluid. For atoms in harmonic traps, the density profiles for unequal mass fermions can be drastically different from their equal-mass counterparts.

• OSTI ID: 20853967
• Journal Information: Physical Review. B, Condensed Matter and Materials Physics, Vol. 74, Issue 22; Other Information: DOI: 10.1103/PhysRevB.74.224504; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1098-0121
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ATOMS
DENSITY
FERMIONS
MASS
MEAN-FIELD THEORY
PAIRING INTERACTIONS
PHASE DIAGRAMS
SUPERFLUIDITY
THERMODYNAMIC PROPERTIES
TRAPS