22 citations · 22 across the 1 of their papers we have counts for
6 papers
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…
Classical quasiparticle dynamics and chaos in trapped Bose condensates
Martin Fliesser, Robert Graham
In the short wavelength limit the Bogoliubov quasiparticles of trapped Bose-Einstein condensates can be described as classical particles and antiparticles with dynamics in a mixed…
A hidden symmetry of collisionless sound of Bose condensates in anisotropic traps
Martin Fliesser, Robert Graham
We derive a symmetry property for the Fourier-transform of the collisionless sound modes of Bose condensates in anisotropic traps connected with a somewhat hidden conservation law.…
Classical quasi-particle dynamics in trapped Bose condensates
Martin Fliesser, András Csordás, Robert Graham +1
The dynamics of quasi-particles in repulsive Bose condensates in a harmonic trap is studied in the classical limit. In isotropic traps the classical motion is integrable and separa…
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…
Collapses and Revivals of Collective Excitations in Trapped Bose Condensates
R. Graham, D. F. Walls, M. J. Collett +2
We present a quantum theory of low-lying excitations in a trapped Bose condensate with finite particle numbers. We find that even at zero temperature condensate number fluctuations…