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UID:DSC-698
DTSTART;TZID=Europe/Berlin:20110512T140000
SEQUENCE:1304667325
TRANSP:OPAQUE
DTEND;TZID=Europe/Berlin:20110512T151500
URL:https://dresden-science-calendar.de/calendar/de/detail/698
LOCATION:MPI-PKS\, Nöthnitzer Straße 3801187 Dresden
SUMMARY:Gull: Cluster Dynamical Mean Field Methods and the Momentum-selecti
 ve Mott Transition
CLASS:PUBLIC
DESCRIPTION:Speaker: Emanuel Gull\nInstitute of Speaker: Columbia - USA\nTo
 pics:\nPhysik\n Location:\n  Name: MPI-PKS (Room 1D1)\n  Street: Nöthnitz
 er Straße 38\n  City: 01187 Dresden\n  Phone: + 49 (0)351 871 0\n  Fax: \
 nDescription: Innovations in methodology and computational power have enab
 led cluster dynamical mean field calculations of the Hubbard model with in
 teraction strengths and band structures representative of high temperature
  copper oxide superconductors\, for clusters large enough that the thermod
 yamic limit behavior may be determined. We present the methods and show ho
 w extrapolations to the thermodynamic limit work in practice. We show that
  the Hubbard model with next-nearest neighbor hopping at intermediate inte
 raction strength captures much of the exotic behavior characteristic of th
 e high temperature superconductors. An important feature of the results is
  a pseudogap for hole doping but not for electron doping. The pseudogap re
 gime is characterized by a gap for momenta near Brillouin zone face and ga
 pless behavior near the zone diagonal. For dopings outside of the pseudoga
 p regime we find scattering rates which vary around the fermi surface in a
  way consistent with recent transport measurements. Using the maximum entr
 opy method we calculate spectra\, self-energies\, and response functions f
 or Raman spectroscopy and optical conductivities\, finding results also in
  good agreement with experiment.
DTSTAMP:20260528T152713Z
CREATED:20110413T073525Z
LAST-MODIFIED:20110506T073525Z
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