Carregant...
Fitxers
Tipus de document
ArticleVersió
Versió publicadaData de publicació
Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/9582
Landau damping of transverse quadrupole oscillations of an elongated Bose-Einstein condensate
Títol de la revista
ISSN de la revista
Títol del volum
Resum
We have studied the interaction between the low-lying transverse collective oscillations and the thermal excitations of an elongated Bose-Einstein condensate by means of perturbation theory. We consider a cylindrical trapped condensate and calculate the transverse elementary excitations at zero temperature by solving the linearized Gross-Pitaevskii equations in two dimensions (2D). We use them to calculate the matrix elements between the thermal excited states and the quasi-2D collective modes. The Landau damping of transverse collective modes is studied as a function of temperature. At low temperatures, the corresponding damping rate is in agreement with the experimental data for the decay of the transverse quadrupole mode, but it is too small to explain the observed slow decay of the transverse breathing mode. The reason for this discrepancy is discussed.
Descripció
Citació
Citació
GUILLEUMAS, Montserrat, PITAEVSKII, L. p. (lev petrovich). Landau damping of transverse quadrupole oscillations of an elongated Bose-Einstein condensate. _Physical Review A_. 2003. Vol. 67, núm. 5, pàgs. 053607. [consulta: 27 de novembre de 2025]. ISSN: 1050-2947. [Disponible a: https://hdl.handle.net/2445/9582]