Abstract
We discuss the superfluid phase transition in a gas of Fermi atoms with a Feshbach resonance. A tunable pairing interaction associated with the Feshbach resonance is shown to naturally lead to the BCS-BEC crossover, where the character of superfluidity continuously changes from the weak-coupling Bardeen-Cooper-Schrieffer (BCS) type to the Bose-Einstein condensation (BEC) of tightly bound molecules, as one decreases the threshold energy 2ν of the Feshbach resonance. We also discuss effects of a trap, as well as the p-wave BCS-BEC crossover adjusted by a p-wave Feshbach resonance.
| Original language | English |
|---|---|
| Pages (from-to) | 5204-5213 |
| Number of pages | 10 |
| Journal | International Journal of Modern Physics B |
| Volume | 20 |
| Issue number | 30-31 |
| DOIs | |
| Publication status | Published - 2006 Dec 20 |
| Externally published | Yes |
Keywords
- BCS-BEC crossover
- Strong-coupling superfluid theory
- Superfluid Fermi gas
ASJC Scopus subject areas
- Statistical and Nonlinear Physics
- Condensed Matter Physics