Fermion-mediated BCS-BEC crossover in ultracold K-40 gases
Oct, 2004
5 pages
Published in:
- Phys.Rev.Lett. 94 (2005) 240402
e-Print:
- cond-mat/0409756 [cond-mat]
Report number:
- LA-UR-04-6304
View in:
Citations per year
Abstract: (arXiv)
Studies of Feshbach resonance phenomena in fermionic alkali gases have drawn heavily on the intuition afforded by a Fermi-Bose theory which presents the Feshbach molecule as a featureless Bose particle. While this model may provide a suitable platform to explore the lithium-6 system, we argue that its application to potassium-40, where the hyperfine structure is inverted, is inappropriate. Introducing a three-state Fermi model, where a spin state is shared by the open and closed channel states, we show that effects of ``Pauli blocking'' are recorded in the internal structure of the condensate wave function.- 05.30.Fk
- 03.75.Hh
- 03.75.Ss
- Bose-Einstein condensation
- potassium
- resonant states
- atom-photon collisions
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