Levinson-like theorem for scattering from a Bose-Einstein condensate.
Phys Rev Lett
; 91(7): 070403, 2003 Aug 15.
Article
en En
| MEDLINE
| ID: mdl-12934998
ABSTRACT
A relation between the number of bound elementary excitations of an atomic Bose-Einstein condensate and the phase shift of elastically scattered atoms is derived. Within the Bogoliubov model of a weakly interacting Bose gas this relation is exact and generalizes Levinson's theorem. Specific features of the Bogoliubov model such as complex energy and continuum bound states are discussed and a numerical example is given.
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Banco de datos:
MEDLINE
Idioma:
En
Revista:
Phys Rev Lett
Año:
2003
Tipo del documento:
Article
País de afiliación:
Alemania