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Second sound in 2D Bose gas: from the weakly interacting to the strongly interacting regime
Miki Ota, Sandro Stringari
Using Landau's theory of two-fluid hydrodynamics, we investigate first and second sound propagating in a two-dimensional Bose gas. We study the temperature and interaction dependen…
Scissors mode of dipolar quantum droplets of dysprosium atoms
Igor Ferrier-Barbut, Matthias Wenzel, Fabian Böttcher +4
We report on the observation of the scissors mode of a single dipolar quantum droplet. The existence of this mode is due to the breaking of the rotational symmetry by the dipole-di…
Angular Momentum of a Bose-Einstein Condensate in a Synthetic Rotational Field
Chunlei Qu, Sandro Stringari
By applying a position-dependent detuning to a spin-orbit-coupled Hamiltonian with equal Rashba and Dresselhaus coupling, we exploit the behavior of the angular momentum of a harmo…
Observation of Spin Superfluidity in a Bose Gas Mixture
E. Fava, T. Bienaimé, C. Mordini +5
The spin dynamics of a harmonically trapped Bose-Einstein condensed binary mixture of sodium atoms is experimentally investigated at finite temperature. In the collisional regime t…
Spin-orbit-coupling induced localization in the expansion of an interacting Bose-Einstein condensate
Chunlei Qu, Lev P. Pitaevskii, Sandro Stringari
By developing a hydrodynamic formalism, we investigate the expansion dynamics of the single-minimum phase of a binary spin-orbit coupled Bose-Einstein condensate, after releasing f…
Thermodynamic behavior of a one-dimensional Bose gas at low temperature
Giulia De Rosi, Grigori E. Astrakharchik, Sandro Stringari
We show that the chemical potential of a one-dimensional (1D) interacting Bose gas exhibits a non-monotonic temperature dependence which is peculiar of superfluids. The effect is a…