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SUMMARY:On the Taxonomy of Holographic Fermi/Non-Fermi Liquids - Norihiro 
 Iizuka (CERN)
DTSTART:20111117T130000Z
DTEND:20111117T140000Z
UID:TALK34610@talks.cam.ac.uk
CONTACT:Sungjay Lee
DESCRIPTION:The existence of Non-Fermi liquids which are not described by 
 Landau's Fermi liquids is a fascinating puzzle in theoretical physics. In 
 this talk\, I will show universal field theories where we can go around th
 e Landau's Fermi-liquids and obtain Non-Fermi-Liquid behavior. These field
  theories contain dynamical singlet fermions which couple through fermion 
 bilinear terms to strongly coupled sectors which are characterized by its 
 ``dynamical scaling''. Suppose these strongly coupled sectors have gravity
  dual (which is not necessarily anti-de Sitter space)\, then by using powe
 rful gauge/gravity duality\, I will argue how these dynamical scaling para
 meters determine the natures of the dynamical singlet fermions in a very u
 niversal way\; These natures include the existence of Fermi-/Non-Fermi liq
 uids\, sharp Fermi-surface\, the decay rates and breakdown of the quasi-pa
 rticles description. I will end with discussion for generalization of our 
 work to include the lattice effects and impurities for more interesting co
 ndensed matter system.
LOCATION:Potter Room (first floor\, Pav. B)
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