Thursday's seminar

[Cond.Matt. & Stat.Mech.Section]

SEMINAR on    Disorder and strong electron correlations





Thursday, 26 November      -  11:00 a.m.





Seminar Room,  Leonardo Building - first floor





Alessio RECATI     ( Universita' di Trento )





  " Unbalanced strongly interacting Fermi gas "



Abstract



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 for using the formalism of quasiparticles to  
build up the equation of state of the normal phase. 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.  
The role of interaction on the radial width of the minority component,  
on the gap of spectral functions, 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.