BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Bragg spectroscopy of a strongly interacting fermi gas - Peter Han
 naford (Swinburne University\, Australia)
DTSTART:20120628T130000Z
DTEND:20120628T140000Z
UID:TALK38031@talks.cam.ac.uk
CONTACT:6270
DESCRIPTION:For sufficiently strong interparticle interactions ultracold F
 ermi gases display universal properties where the macroscopic parameters b
 ecome independent of the microscopic details of of the interatomic potenti
 al.  We will describe the application of Bragg spectroscopy to probe the d
 ynamic density response and spin response of a strongly interacting two-co
 mponent Fermi gas of lithium-6 atoms confined in an optical dipole trap. T
 he density response and spin response allow full characterisation of the s
 pin-parallel and spin-antiparallel components of the dynamic and static st
 ructure factors. Bragg spectra taken close to unitarity show that short-ra
 nge pair correlations remarkably follow a simple universal law based on a 
 single short-range parameter\, the ‘contact’\, over a broad range of m
 omenta and interaction strengths and that these pair correlations persist 
 well above the superfluid transition temperature. Finally\, we will report
  on results for the crossover from three to two dimensions for the case of
  a weakly interacting Fermi gas of lithium-6 atoms confined in a single 
 ‘pancake’ dipole trap
LOCATION:Rutherford building\, Seminar Room B
END:VEVENT
END:VCALENDAR