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Q: Fachverband Quantenoptik und Photonik
Q 40: Quantengase (Spinor-Gase)
Q 40.7: Talk
Wednesday, March 21, 2007, 15:30–15:45, 6J
Thermodynamic Properties of Spinor Fermi Gases — •Aristeu Lima1 and Axel Pelster2 — 1Institut für Theoretische Physik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany — 2Fachbereich Physik, Universität Duisburg-Essen, Lotharstraße 1, 47048 Duisburg, Germany
At first, we consider an ideal harmonically trapped Fermi gas in which the particles have the total angular momentum F=3/2. For a fixed magnetization, we calculate the temperature dependence of thermodynamic quantities like heat capacity, chemical and magneto-chemical potential within a semiclassical approximation. Then we treat a weakly interacting spinor Fermi gas with contact interaction both perturbatively and non-perturbatively within a mean-field approach. In particular, we evaluate the influence of the contact interaction upon the ground state energy. Such fermionic spinor systems are important, for example, in the context of a 52Cr-53Cr boson-fermion mixture [1].
[1] R. Chicireanu et al., Phys. Rev. A 73, 053406 (2006).