Collective_excitations_Alexandrov.pdf (606.07 kB)
Collective excitations and screening properties of a condensed charged Bose gas
journal contribution
posted on 2009-02-27, 13:06 authored by A.S. Alexandrov, W.H. BeereThe Bogoliubov–de Gennes (BdG) type equations are derived for the Coulomb Bose gas describing the electrodynamics of charged bosons. The gauge invariant dielectric response function and collective excitations of a charged Bose gas at T=0 are found. We find a plasmon branch which is the same as the single-particle Bogoliubov spectrum in agreement with the textbook result. The superconducting properties of the charged Bose gas are verified. A gauge-invariant formalism for calculating the response of the supracondensate particles is proposed.
History
School
- Science
Department
- Physics
Citation
ALEXANDROV, A.S. and BEERE, W.H., 1995. Collective excitations and screening properties of a condensed charged Bose gas. Physical Review B, 51 (9), pp. 5887-5891Publisher
© American Physical SocietyVersion
- VoR (Version of Record)
Publication date
1995Notes
This article was published in the journal Physical Review B [© American Physical Society]. The definitive version is available at: http://link.aps.org/doi/10.1103/PhysRevB.51.5887ISSN
1098-0121Language
- en