Kiel 2011 – wissenschaftliches Programm

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P: Fachverband Plasmaphysik

P 18: Poster: Theorie/Simulation dichter und stark gekoppelter Plasmen

P 18.10: Poster

Mittwoch, 30. März 2011, 16:30–18:30, Foyer

Nonequilibrium Green’s functions approach to the pair distribution function of quantum many-body systems out of equilibrium — •Kay Kobusch, Michael Bonitz, Karsten Balzer, and Lasse Rosenthal — Institut für Theoretische Physik und Astrophysik, Universität Kiel, D-24098 Germany

The pair distribution function (PDF) is a key quantity for analyzing correlation effects of a quantum system both in and far from equilibrium. We derive an expression for the PDF in terms of single particle Green’s functions – the solutions of the Keldysh-Kadanoff-Baym equations in the two-time plane. The result includes initial correlations and generalizes previous density matrix expressions from single-time quantum kinetic theory. As an illustration we present numerical results for the PDF of electrons and holes in a strongly correlated electron-hole bilayer.