79 citations · 232 across the 12 of their papers we have counts for
12 papers
Onset and Irreversibility of Granulation of Bose-Einstein condensates under Feshbach Resonance Management
A. U. J. Lode, M. C. Tsatsos, P. G. Kevrekidis +4
Granulation of quantum matter -- the formation of persistent small-scale patterns -- is realized in the images of quasi-one-dimensional Bose-Einstein condensates perturbed by a per…
Parametric Excitation of a Bose-Einstein Condensate: From Faraday Waves to Granulation
J. H. V. Nguyen, M. C. Tsatsos, D. Luo +4
We explore, both experimentally and theoretically, the response of an elongated Bose-Einstein condensate to modulated interactions. We identify two distinct regimes differing in mo…
Thermodynamic measurement of the sound velocity of a Bose gas across the transition to Bose-Einstein condensation
A. R. Fritsch, P. E. S. Tavares, F. A. J. Vivanco +3
We present an alternative method for determining the sound velocity in atomic Bose-Einstein condensates, based on thermodynamic global variables. The total number of trapped atoms…
Matter wave speckle observed in an out-of-equilibrium quantum fluid
Pedro E. S. Tavares, Amilson R. Fritsch, Gustavo D. Telles +4
We report the results of a direct comparison of a freely expanding turbulent Bose-Einstein condensate and the propagation of an optical speckle pattern. We found remarkably similar…
Nonlinear dependence observed in quadrupolar collective excitation of a trapped BEC
A. R. Fritsch, P. E. S. Tavares, Y. R. Tonin +4
We report the experimental observation of the collective excitations induced in a magnetically trapped 87Rb Bose-Einstein condensate. Low-lying mode excitations were studied by tra…
Investigation of the momentum distribution of an excited BEC by free expansion: coupling with collective modes
A. Bahrami, P. E. S Tavares, A. R. Fritsch +4
We investigate the evolution of the momentum distribution of a Bose-Einstein condensate subjected to an external small oscillatory perturbation as a function of the in-trap evoluti…