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SUMMARY:Dynamics of 1d quantum liquids - Prof. Alex Kamenev
DTSTART:20080701T101500Z
DTEND:20080701T111500Z
UID:TALK12758@talks.cam.ac.uk
CONTACT:Joe Bhaseen
DESCRIPTION:The talk focuses on  momentum and energy resolved correlation 
 functions of 1d bosonic and fermionic liquids. The emphasis is on going be
 yond the quantum hydrodynamics (i.e. Luttinger liquid) approximation\, whi
 ch is restricted to a linearized dispersion relation. The non-linearity of
  the dispersion relation leads to\, previously unacknowledged\, power-law 
 singularities in correlation functions with momentum-dependent exponents. 
 I shall discuss possible manifestations of these singularities\, such as e
 .g. excitation of dark solitons in 1d Bose condensates. 
LOCATION:TCM Seminar Room\, Cavendish Laboratory
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