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SUMMARY:Mott physics\, sign structure\, and high-TC superconductivity - We
 ng\, ZY (Tsinghua University)
DTSTART:20130916T100000Z
DTEND:20130916T104500Z
UID:TALK47162@talks.cam.ac.uk
CONTACT:Mustapha Amrani
DESCRIPTION:Fermion sign structure constitutes the foundation of the Landa
 us Fermi liquid theory in condensed matter physics. But it will be fundame
 ntally changed by the strong interaction in the so-called doped Mott insul
 ator relevant to high-Tc cuprate materials. New novel sign structure as re
 duced Fermion signs will appear here\, which can be precisely captured by 
 a nonintegrable phase factor like emergent topological gauge fields in the
  simplest doped Mott insulators: the t-J and Hubbard models. The quantum i
 nterference of the altered Fermion signs will result in non-Fermi-liquid/n
 on-BCS-type normal/superconducting phenomena\, which may provide a systema
 tical understanding of the anomalous properties observed in cuprate superc
 onductors.\n
LOCATION:Seminar Room 1\, Newton Institute
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