Parish, MM;
Mihaila, B;
Simons, BD;
Littlewood, PB;
(2005)
Fermion-mediated BCS-BEC crossover in ultracold K-40 gases.
PHYS REV LETT
, 94
(24)
, Article 240402. 10.1103/PhysRevLett.94.240402.
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Abstract
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 Li-6 system, we argue that its application to K-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" appear in the internal structure of the condensate wave function.
| Type: | Article |
|---|---|
| Title: | Fermion-mediated BCS-BEC crossover in ultracold K-40 gases |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.94.240402 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.94.240402 |
| Language: | English |
| Additional information: | © 2005 The American Physical Society |
| Keywords: | BOSE-CONDENSATION, SUPERCONDUCTIVITY |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1332997 |
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