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Expansion of a coherent array of Bose-Einstein condensates
P. Pedri, L. Pitaevskii, S. Stringari +6
We investigate the properties of a coherent array containing about 200 Bose-Einstein condensates produced in a far detuned 1D optical lattice. The density profile of the gas, image…
Finite size effects on the collective oscillations of a trapped Bose gas
Francesca Zambelli, Sandro Stringari
Sum rules are used to calculate the corrections to the hydrodynamic collective frequencies of a harmonically trapped Bose gas at T=0, due to finite size effects. We show that, with…
Helium nanodroplets and trapped Bose-Einstein condensates as prototypes of finite quantum fluids
F. Dalfovo, S. Stringari
Helium nanodroplets and trapped Bose-Einstein condensates in dilute atomic gases offer complementary views of fundamental aspects of quantum many-body systems. We discuss analogies…
Vortex nucleation and quadrupole deformation of a rotating Bose-Einstein condensate
M. Kraemer, L. Pitaevskii, S. Stringari +1
Using a semi-analytic model based on the Thomas-Fermi approximation, we investigate the relevance of the quadrupole deformation of a trapped Bose-Einstein condensate for the nuclea…
Consequence of superfluidity on the expansion of a rotating Bose-Einstein condensate
Mark Edwards, Charles W. Clark, P. Pedri +2
We study the time evolution of a rotating condensate, that expands after being suddenly released from the confining trap, by solving the hydrodynamic equations of irrotational supe…
Thermal vs quantum decoherence in double well trapped Bose-Einstein condensates
L. Pitaevskii, S. Stringari
The quantum and thermal fluctuations of the phase are investigated in a cold Bose gas confined by a double well trap. The coherence of the system is discussed in terms of the visib…