Hannover 2010 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 23: Poster II
A 23.25: Poster
Donnerstag, 11. März 2010, 16:30–19:00, Lichthof
Ground state phase diagram of interacting fermions in a disordered 1d optical lattice — •Julia Wernsdorfer1, Georg Harder2, Ulrich Schollwoeck2, and Walter Hofstetter1 — 1Institut für Theoretische Physik, Johann Wolfgang Goethe-Universität, Max-von-Laue-Str. 1, 60438 Frankfurt am Main, Deutschland — 2Department für Physik, Ludwig-Maximilians-Universität München, Theresienstrasse 37, 80333 München, Deutschland
In this work we investigate interacting fermions in a one-dimensional optical lattice with box disorder. Using real-space dynamical mean-field theory [1] the ground state phase diagram is obtained. We quantify localization properties via the probability distribution function of the local density of states and the inverse participation ratio. The accuracy of our results is evaluated by comparison with exact results provided by the density-matrix renormalization group.
[1] M Snoek, I Titvinidze, C Toke, K Byczuk and W Hofstetter, Antiferromagnetic order of strongly interacting fermions in a trap: real-space dynamical mean-field analysis, New Journal of Physics 10, 093008 (2008)