80 citations · 219 across the 7 of their papers we have counts for
7 papers
Gradient corrections to the local density approximation for trapped superfluid Fermi gases
András Csordás. Orsolya Almásy, Péter Szépfalusy
Two species superfluid Fermi gas is investigated on the BCS side up to the Feshbach resonance. Using the Greens's function technique gradient corrections are calculated to the gene…
The Kohn mode for trapped Bose gases within the dielectric formalism
Jürgen Reidl, Gyula Bene, Robert Graham +1
The presence of undamped harmonic center of mass oscillations of a weakly interacting Bose gas in a harmonic trap is demonstrated within the dielectric formalism for a previously i…
Conserving and gapless model of the weakly interacting Bose gas
Martin Fliesser, Jürgen Reidl, Péter Szépfalusy +1
The dielectric formalism is used to set up an approximate description of a spatially homogeneous weakly interacting Bose gas in the collision-less regime, which is both conserving…
Shifts and widths of collective excitations in trapped Bose gases by the dielectric formalism
J. Reidl, A. Csordás, R. Graham +1
We present predictions for the temperature dependent shifts and damping rates. They are obtained by applying the dielectric formalism to a simple model of a trapped Bose gas. Withi…
Quasi-particle excitations and dynamical structure function of trapped Bose-condensates in the WKB approximation
András Csordás, Robert Graham, Péter Szépfalusy
The Bogoliubov equations of the quasi-particle excitations in a weakly interacting trapped Bose-condensate are solved in the WKB approximation in an isotropic harmonic trap, determ…
Hydrodynamic excitations of Bose condensates in anisotropic traps
Martin Fliesser, András Csordás, Péter Szépfalusy +1
The collective excitations of Bose condensates in anisotropic axially symmetric harmonic traps are investigated in the hydrodynamic and Thomas-Fermi limit. We identify an additiona…