Measurement of a mixed-spin-channel Feshbach resonance inRb87
نویسندگان
چکیده
منابع مشابه
Spin-orbit coupled Fermi gases across a Feshbach resonance.
In this Letter we study both ground state properties and the superfluid transition temperature of a spin-1/2 Fermi gas across a Feshbach resonance with a synthetic spin-orbit coupling, using the mean-field theory and the exact solution of two-body problem. We show that a strong spin-orbit coupling can significantly enhance the pairing gap for negative scattering length a(s), due to increased de...
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The physics of Feshbach resonance is analyzed using an analytic expression for the s-wave scattering phase shift and the scattering length a which we derive within a two-channel tight-binding model. Employing a unified treatment of bound states and resonances in terms of the Jost function, it is shown that, for strong interchannel coupling, Feshbach resonance can occur even when the closed chan...
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A Feshbach resonance occurs when the energy of two interacting free particles comes into resonance with a molecular bound state. When approaching this resonance, marked changes in the interaction strength between the particles can arise. Feshbach resonances provide a powerful tool for controlling the interactions in ultracold atomic gases, which can be switched from repulsive to attractive1–4, ...
متن کاملMeasurement of Sound Velocity in a Fermi Gas near a Feshbach Resonance
Sound waves are excited in an optically trapped degenerate Fermi gas of spin-up and spin-down atoms with magnetically tunable interactions. Measurements are made throughout the crossover region, from a weakly interacting Fermi gas through the resonant Fermi superfluid regime to a Bose condensate of dimer molecules. The measured sound velocities test theories of hydrodynamic wave propagation and...
متن کاملFour-boson scale near a Feshbach resonance
– We show that an independent four-body momentum scale μ(4) drives the tetramer binding energy for fixed trimer energy (or three-body scale μ(3)) and large scattering length (a). The threeand four-body forces from the one-channel reduction of the atomic interaction near a Feshbach resonance disentangle μ(4) and μ(3). The four-body independent scale is also manifested through a family of Tjon li...
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ژورنال
عنوان ژورنال: Physical Review A
سال: 2004
ISSN: 1050-2947,1094-1622
DOI: 10.1103/physreva.69.032705