The BEC-BCS Crossover in Ultracold Fermi Gases
- Combescot, R.
in FIFTY YEARS OF NUCLEAR BCS: PAIRING IN FINITE SYSTEMS
edited by Broglia, RA and Zelevinsky, V (2013)
Abstract : We provide an introduction to the matter of ultracold Fermi gases and
the observation of the BEC-BCS crossover in these systems. We discuss in
particular the simple modelisation of these gases, the Fano-Feshbach
resonance, the simple BCS model of the crossover, the equation of state
at T = 0, experiments on superfluid vortices and on critical velocity,
results with the T-matrix approximation, and the Fermi polaron.