Infrared Behavior of Interacting Bosons at Zero Temperature
Résumé
We exploit the symmetries associated with the stability of the superfluid phase to solve the long-standing problem of interacting bosons in the presence of a condensate at zero temperature. Implementation of these symmetries poses strong conditions on the renormalizations that heal the singularities of perturbation theory. The renormalized theory gives: For d>3 the Bogoliubov quasiparticles as an exact result; for 1
Domaines
Matière Condensée [cond-mat]Fabio Pistolesi : Connectez-vous pour contacter le contributeur
https://hal.science/hal-01517526
Soumis le : mercredi 3 mai 2017-13:39:01
Dernière modification le : mercredi 13 mars 2024-09:40:09
Dates et versions
Identifiants
- HAL Id : hal-01517526 , version 1
- ARXIV : cond-mat/9604076
- DOI : 10.1103/PhysRevLett.78.1612
Citer
C. Castellani, C. Di Castro, F. Pistolesi, G. C. Strinati. Infrared Behavior of Interacting Bosons at Zero Temperature. Physical Review Letters, 1997, 78 (9), pp.1612 - 1615. ⟨10.1103/PhysRevLett.78.1612⟩. ⟨hal-01517526⟩
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