59 citations · 442 across the 29 of their papers we have counts for
5 papers · 1 filter
Collective oscillations in ultracold atomic gases
J. T. Mendonça, R. Kaiser, H. Terças +1
Using both fluid and kinetic descriptions, where repulsive forces between near by atoms are included, we discuss the basic oscillations and waves of a cloud of ultra-cold atoms con…
Driven collective instabilities in magneto-optical traps: a fluid-dynamical approach
H. Terças, J. T. Mendonça, R. Kaiser
We present a theoretical model to describe an instability mechanism in ultra-cold gases, where long-range interactions are taken into account. Focusing on the nonlinear coupling be…
Rossby waves in rapidly rotating Bose-Einstein condensates
H. Terças, J. P. A. Martins, J. T. Mendonça
We predict and describe a new collective mode in rotating Bose-Einstein condensates, which is very similar to the Rossby waves in geophysics. In the regime of fast rotation, the Co…
A phonon laser in ultra-cold matter
J. T. Mendonça, G. Brodin, M. Marklund +1
We show the possible excitation of a phonon laser instability in an ultra-cold atomic gas confined in a magneto-optical trap. Such an effect results from a negative Landau damping…
Two-stream instability in quasi-one-dimensional Bose-Einstein condensates
H. Terças, J. T. Mendonça, G. R. M. Robb
We apply a kinetic model to predict the existence of an instability mechanism in elongated Bose-Einstein condensates. Our kinetic description, based on the Wigner formalism, is emp…