Berlin 2012 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
TT: Fachverband Tiefe Temperaturen
TT 19: Correlated Electrons: (General) Theory 2
TT 19.2: Vortrag
Dienstag, 27. März 2012, 09:45–10:00, H 3010
Quantification of correlations in quantum many-particle systems — •Krzysztof Byczuk1, Jan Kunes2, Walter Hofstetter3, and Dieter Vollhardt4 — 1Physics Faculty, Institute of Theoretical Physics, University of Warsaw, ul. Hoza 69, 00-681 Warszawa, Poland — 2Institute of Physics, Academy of Sciences of the Czech Republic, Cukrovarnicka 10, 162 53 Praha 6, Czech Republic — 3Institut for Theoretische Physics, Goethe-Universitat, 60438 Frankfurt/Main, Germany — 4Theoretical Physics III, Center for Electronic Correlations and Magnetism, Institute of Physics, University of Augsburg, 86135 Augsburg, Germany
We introduce a well-defined and unbiased measure of the strength of correlations in quantum many-particle systems which is based on the relative von Neumann entropy computed from the density operator of correlated and uncorrelated states [1]. The usefulness of this general concept is demonstrated by quantifying correlations of interacting electrons in the Hubbard model and in a series of transition metal oxides using dynamical mean-field theory.
K. Byczuk, J. Kunes, W. Hofstetter, and D. Vollhardt;
arXiv:1110.3214