Physics – Condensed Matter – Quantum Gases
Scientific paper
2009-06-15
Physics
Condensed Matter
Quantum Gases
12 pages, 6 figures, proceedings of the conference "Shifmania, Crossing the Boundaries: Gauge Dynamics at Strong Coupling", Ma
Scientific paper
We derived the low energy effective action for the collective modes in asymmetric fermionic systems with attractive interaction. We obtained the phase diagram in terms of the chemical potentials. It features a stable gapless superfluidity with one Fermi surface on the BEC side of the resonance. Also we predict a sharp increase in outer core of a vortex, i.e. vortex size, upon entering into the gapless phase. This may serve as a signature of a gapless phase.
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