Physics – Condensed Matter – Other Condensed Matter
Scientific paper
2008-03-31
Phys. Rev. A 78, 023633 (2008)
Physics
Condensed Matter
Other Condensed Matter
Revisitedc version accepted for pubblication. 1 figure added, 1 figure correted, typos corrected, references updated
Scientific paper
10.1103/PhysRevA.78.023633
We study the zero temperature properties of a trapped polarized Fermi gas at unitarity by assuming phase separation between an unpolarized superfluid and a polarized normal phase. The effects of the interaction are accounted using the formalism of quasi-particles to build up the equation of state of the normal phase with the Monte Carlo results for the relevant parameters. Our predictions for the Chandrasekhar-Clogston limit of critical polarization and for the density profiles, including the density jump at the interface, are confirmed with excellent accuracy by the recent experimental results at MIT. The role of interaction on the radial width of the minority component, on the gap of the RF transition and on the spin oscillations in the normal phase is also discussed. Our analysis points out the Fermi liquid nature of these strongly interacting spin polarized configurations.
Lobo Carlos
Recati Alessio
Stringari Sandro
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