3 papers
cond-mat1997
Anomalous fluctuations of the condensate in interacting Bose gases
S. Giorgini, L. P. Pitaevskii, S. Stringari
We find that the fluctuations of the condensate in a weakly interacting Bose gas confined in a box of volume follow the law . This anomalous behaviour ari…
cond-mat1997
Collective and single particle excitations of a trapped Bose gas
F. Dalfovo, S. Giorgini, M. Guilleumas +2
The density of states of a Bose-condensed gas confined in a harmonic trap is investigated. The predictions of Bogoliubov theory are compared with the ones of Hartree-Fock theory an…
cond-mat1996
Scaling and thermodynamics of a trapped Bose-condensed gas
S. Giorgini, L. Pitaevskii, S. Stringari
We investigate the thermodynamics of a Bose gas interacting with repulsive forces and confined in a harmonic trap. We show that the relevant parameters of the system (temperature,…