Density functional theory for atomic Fermi gases
نویسندگان
چکیده
منابع مشابه
Density correlations in ultracold atomic Fermi gases
We investigate density fluctuations in a coherent ensemble of interacting fermionic atoms. Adapting the concept of full counting statistics, well known from quantum optics and mesoscopic electron transport, we study second-order as well as higher-order correlators of density fluctuations. Using the mean-field BCS state to describe the whole interval between the BCS limit and the Bose-Einstein c...
متن کاملTheory of ultracold atomic Fermi gases
The physics of quantum degenerate atomic Fermi gases in uniform as well as in harmonically trapped configurations is reviewed from a theoretical perspective. Emphasis is given to the effect of interactions which play a crucial role, bringing the gas into a superfluid phase at low temperature. In these dilute systems interactions are characterized by a single parameter, the s-wave scattering len...
متن کاملTrapped Atomic Fermi Gases
A many-body system of fermion atoms with a model interaction characterized by the scattering length a is considered. We treat both a and the density as parameters assuming that the system can be created artificially in a trap. If a is negative the system becomes strongly correlated at densities ρ ∼ |a| −3 , provided the scattering length is the dominant parameter of the problem. It means that w...
متن کاملDensity waves and supersolidity in rapidly rotating atomic Fermi gases.
We study theoretically the low-temperature phases of a two-component atomic Fermi gas with attractive s-wave interactions under conditions of rapid rotation. We find that, in the extreme quantum limit, when all particles occupy the lowest Landau level, the normal state is unstable to the formation of charge density wave (CDW) order. At lower rotation rates, when many Landau levels are occupied,...
متن کاملSuperfluidity in atomic Fermi gases
Article history: Accepted 2 November 2009 Available online xxxx PACS: 03.75.Hh 03.75.Ss 74.20. z
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ژورنال
عنوان ژورنال: Nature Physics
سال: 2012
ISSN: 1745-2473,1745-2481
DOI: 10.1038/nphys2348