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SUMMARY:The N+1 body problem and the phase diagram of a spin imbalanced fe
 rmi gas - Dr Frederic Chevy
DTSTART:20100426T143000Z
DTEND:20100426T160000Z
UID:TALK22946@talks.cam.ac.uk
CONTACT:6270
DESCRIPTION:Recent progress in laser cooling and trapping of atomic\nvapou
 rs have led to the experimental realization of some extensions of\nthe cel
 ebrated BCS model describing weakly attractive fermions. In\nthis talk we 
 will discuss recent results at ENS on the thermodynamics\nof strongly attr
 active Fermi gases with imbalanced spin populations.\nWe will show in part
 icular how these experiments have unveiled the\nFermi liquid nature of the
  normal phase of these systems and allowed\nfor a precise measurement of t
 he renormalized effective parameters\ncharacterizing  the associated quasi
 -particles. We will demonstrate\nhow these parameters can be fairly accura
 tely calculated by the study\nof an impurity immersed in a Fermi Sea (the 
 N+1 body problem).
LOCATION:Rutherford building\, Seminar Room B
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