Quantification of correlations in quantum many-particle systems.
Phys Rev Lett
; 108(8): 087004, 2012 Feb 24.
Article
en En
| MEDLINE
| ID: mdl-22463560
ABSTRACT
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. 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.
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01-internacional
Base de datos:
MEDLINE
Idioma:
En
Revista:
Phys Rev Lett
Año:
2012
Tipo del documento:
Article
País de afiliación:
Polonia