Dresden 2009 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 24: Correlated Electrons: (General) Theory 2
TT 24.8: Vortrag
Mittwoch, 25. März 2009, 11:45–12:00, HSZ 301
Influence of orbital degeneracy on the two particle spectral function — •Berlinson Dominikus Napitu1,2 and Jamal Berakdar2 — 1Max-Planck-Institut für Mikrostrukturphysik, Halle — 2Institut für Physik- Heinrich-Damerow-Strasse 4 Halle (Saale)
We studied the evolution of two particle spectral function of the orbitally degenerate Hubbard model with the same and different bandwidth. The calculation of single particle spectra is based on dynamical mean field theory (DMFT) together with quantum monte carlo (QMC) while for two particle spectra the ladder approximation is implemented. The influence of temperature is also considered.