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Q: Fachverband Quantenoptik und Photonik

Q 22: Quantengase: Fermionen im Gitter

Q 22.1: Preisträgervortrag

Dienstag, 3. März 2009, 14:00–14:30, VMP 6 HS-A

Strong correlations in ultracold fermionic gases — •Corinna Kollath — CPHT, Ecole Polytechnique, CNRS, 91128 Palaiseau, France --- Trägerin des Hertha-Sponer-Preises

Atomic gases cooled to Nanokelvin temperatures are a new exciting tool to study a broad range of quantum phenomena. In particular, the outstanding degree of control which has been achieved over these quantum systems facilitates access to strongly correlated quantum many body physics. For example, optical lattices have been created to mimic condensed matter systems. We perform a theoretical study of a fermionic gas with two repulsively interacting hyperfine states confined to an optical lattice. We determine a generic state diagram in the presence of a harmonic confining potential. We further discuss implications for current experiments.