163 citations · 681 across the 14 of their papers we have counts for
14 papers
On the momentum of solitons and vortex rings in a superfluid
L. P. Pitaevskii
This paper is devoted to the calculation of the momentum of localized excitations, such as solitons and vortex rings, moving in a superfluid. The direct calculation of the momentum…
Increasing Quantum Degeneracy by Heating a Superfluid
D. J. Papoular, G. Ferrari, L. P. Pitaevskii +1
We consider a uniform superfluid confined in two compartments connected by a superleak and initially held at equal temperatures. If one of the two compartments is heated, a fractio…
Local atom-number fluctuations in quantum gases at finite temperature
M. Klawunn, A. Recati, L. P. Pitaevskii +1
We investigate the number fluctuations in small cells of quantum gases pointing out important deviations from the thermodynamic limit fixed by the isothermal compressibility. Both…
Sound propagation and oscillations of a superfluid Fermi gas in the presence of a 1D optical lattice
L. P. Pitaevskii, S. Stringari, G. Orso
We develop the hydrodynamic theory of Fermi superfluids in the presence of a periodic potential. The relevant parameters governing the propagation of sound (compressibility and eff…
Momentum distribution of a trapped Fermi gas with large scattering length
L. Viverit, S. Giorgini, L. P. Pitaevskii +1
Using a scattering length parametrization of the BCS-BEC crossover as well as the local density approximation for the density profile, we calculate the momentum distribution of a h…
Landau damping of transverse quadrupole oscillations of an elongated Bose-Einstein condensate
M. Guilleumas, L. P. Pitaevskii
We study the interaction between low-lying transverse collective oscillations and thermal excitations of an elongated Bose-Einstein condensate by means of perturbation theory. We c…