منابع مشابه
Trapped Fermi gases
Trapped degenerate atomic gases provide exciting opportunities for the manipulation and quantitative study of quantum statistical effects, such as the strikingly direct observation of Bose-Einstein condensation @1–3#. Although perhaps not as dramatic as the phase transition associated with bosons, the behavior of trapped Fermi gases also merits attention, both as a degenerate quantum system in ...
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 کاملVortices in trapped superfluid fermi gases.
We consider a superfluid of trapped fermionic atoms and study the single vortex solution in the Ginzburg-Landau regime. We define simple analytical estimates for the main characteristics of the system, such as the vortex core size, temperature regimes for the existence of a vortex, and the effects of rotation and interactions with normal fermions. The parameter dependence of the vortex core siz...
متن کاملCollective excitation of trapped degenerate Fermi gases
We show that the slow driving of a focused laser beam through a cloud of trapped cold fermions allows creation of a collective excitation in the system. The method, proposed originally by us for bosons, seems to be quite feasible experimentally—it requires only an appropriate change in time of the potential in the atomic traps, as realized in laboratories already. The experimental realization o...
متن کاملDegeneracies in trapped two-component Fermi gases.
We report on previously unobserved intersystem degeneracies in two-component equal-mass Fermi gases with interspecies zero-range interactions under isotropic harmonic confinement. Over the past 10 years, two-component Fermi gases consisting of n1 spin-up and n2 spin-down atoms with interspecies zero-range interactions have become a paradigm for modeling condensed matter systems, nuclear matter,...
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ژورنال
عنوان ژورنال: Physical Review A
سال: 1997
ISSN: 1050-2947,1094-1622
DOI: 10.1103/physreva.55.4346