Physics – Condensed Matter – Quantum Gases
Scientific paper
2009-11-17
Phys. Rev. A 81, 043604 (2010)
Physics
Condensed Matter
Quantum Gases
6 figures; revised version
Scientific paper
We present a theoretical study of the BEC-BCS crossover in the Bose-Einstein-Condensate regime (BEC), in the case of an unequal number of fermions of two species. We take full account of the composite nature of the dimers made of fermions. In the limit of low densities, we calculate the ground state energy of the system, or equivalentely the chemical potentials of each species as well as the one-particle gap and the energy of an "impurity" immersed in a Fermi sea. For the chemical potentials we go up to order (density)^{4/3}.The results found involve the exact atom-dimer a_{AD} and dimer-dimer a_{DD} scattering lengths and therefore include the 3 and 4-body problems in the manybody problem. We briefly comment on the importance of the different mean-field corrections for recent experiments.
Alzetto F.
Leyronas Xavier
No associations
LandOfFree
Equation of state of a polarized Fermi gas in the Bose-Einstein Condensate limit does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Equation of state of a polarized Fermi gas in the Bose-Einstein Condensate limit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Equation of state of a polarized Fermi gas in the Bose-Einstein Condensate limit will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-650686