124 citations · 435 across the 11 of their papers we have counts for
11 papers
Measurement of the order parameter and its spatial fluctuations across Bose-Einstein condensation
Wolswijk L., Mordini C., Farolfi A. +5
We investigate the strong out-of-equilibrium dynamics occurring when a harmonically trapped ultracold bosonic gas is evaporatively cooled across the Bose--Einstein condensation tra…
High sensitivity phonon spectroscopy of Bose-Einstein condensates using matter-wave interference
N. Katz, R. Ozeri, J. Steinhauer +3
We study low momentum excitations of a Bose-Einstein condensate using a novel matter-wave interference technique. In time-of-flight expansion images we observe strong matter-wave f…
Shape deformations and angular momentum transfer in trapped Bose-Einstein condensates
F. Dalfovo, S. Stringari
Angular momentum can be transferred to a trapped Bose-Einstein condensate by distorting its shape with an external rotating field, provided the rotational frequency is larger than…
How to measure the Bogoliubov quasiparticle amplitudes in a trapped condensate
A. Brunello, F. Dalfovo, L. Pitaevskii +1
We propose an experiment, based on two consecutive Bragg pulses, to measure the momentum distribution of quasiparticle excitations in a trapped Bose gas at low temperature. With th…
Pinning of quantized vortices in helium drop by dopant atoms and molecules
Franco Dalfovo, Ricardo Mayol, Marti Pi +1
Using a density functional method, we investigate the properties of liquid 4He droplets doped with atoms (Ne and Xe) and molecules (SF_6 and HCN). We consider the case of droplets…
A superfluid hydrodynamic model for the enhanced moments of inertia of molecules in liquid 4He
C. Callegari, A. Conjusteau, I. Reinhard +3
We present a superfluid hydrodynamic model for the increase in moment of inertia, , of molecules rotating in liquid He. The static inhomogeneous He density around each mole…
Quantum Evaporation from Superfluid Helium at Normal Incidence
F. Dalfovo, M. Guilleumas, A. Lastri +2
We study the scattering of atoms, rotons and phonons at the free surface of He at normal incidence and calculate the evaporation, condensation and reflection probabilities. Ass…
Rotons and Quantum Evaporation from Superfluid 4He
F. Dalfovo, A. Fracchetti, A. Lastri +2
The probability of evaporation induced by and rotons at the surface of superfluid helium is calculated using time dependent density functional theory. We consider excit…
Density functional calculations for 4He droplets
M. Casas, F. Dalfovo, A. Lastri +2
A novel density functional, which accounts correctly for the equation of state, the static response function and the phonon-roton dispersion in bulk liquid helium, is used to predi…
Bounds for the phonon-roton dispersion in superfluid 4He
J. Boronat, J. Casulleras, F. Dalfovo +2
The sum rule approach is used to derive upper bounds for the dispersion law of the elementary excitations of a Bose superfluid. Bounds are explicitly calculated for the ph…
Dynamic Structure Function in 3he-4he Mixtures
J. Boronat, F. Dalfovo, F. Mazzanti +1
Relevant features of the dynamic structure function in He-He mixtures at zero temperature are investigated starting from known properties of the ground state. Sum…