139 citations · 371 across the 11 of their papers we have counts for
11 papers
Universal dynamics of a turbulent superfluid Bose gas
A. D. García-Orozco, L. Madeira, M. A. Moreno-Armijos +6
We study the emergence of universal scaling in the time-evolving momentum distribution of a harmonically trapped three-dimensional Bose-Einstein condensate, parametrically driven t…
Exploring emergent heterogeneous phases in strongly repulsive Fermi gases
F. Scazza, G. Valtolina, A. Amico +5
Recent experiments have revitalized the interest in a Fermi gas of ultracold atoms with strong repulsive interactions. In spite of its seeming simplicity, this system exhibits a co…
Time-resolved observation of competing attractive and repulsive short-range correlations in strongly interacting Fermi gases
A. Amico, F. Scazza, G. Valtolina +5
We exploit a time-resolved pump-probe spectroscopic technique to study the out-of-equilibrium dynamics of an ultracold two-component Fermi gas, selectively quenched to strong repul…
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…
Quantum turbulence in trapped atomic Bose-Einstein condensates
Marios C. Tsatsos, Pedro E. S. Tavares, Andre Cidrim +5
Turbulence, the complicated fluid behavior of nonlinear and statistical nature, arises in many physical systems across various disciplines, from tiny laboratory scales to geophysic…
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…
Twisted unwinding of multi-charged quantum vortex and generation of turbulence in atomic Bose-Einstein condensates
G. D. Telles, P. E. S. Tavares, A. R. Fritsch +5
We report the observation of the twisted decay of quadruply charged vortices in an atomic Bose-Einstein condensate. Supporting numerical simulations show that the singly-charged vo…
Out-of-phase oscillation between superfluid and thermal components for a trapped Bose condensate under oscillatory excitation
P. E. S. Tavares, G. D. Telles, R. F. Shiozaki +3
The vortex nucleation and the emergence of quantum turbulence induced by oscillating magnetic fields, introduced by Henn E A L, et al. 2009 (Phys. Rev. A 79, 043619) and Henn E A L…
Three-vortex configurations in trapped Bose-Einstein condensates
J. A. Seman, E. A. L. Henn, M. Haque +9
We report on the creation of three-vortex clusters in a Bose-Einstein condensate by oscillatory excitation of the condensate. This procedure can create vortices of both c…