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Title: Collective excitations and screening properties of a condensed charged Bose gas
Authors: Alexandrov, A.S.
Beere, W.H.
Issue Date: 1995
Publisher: © American Physical Society
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. 5887-5891
Abstract: The 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.
Description: 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.51.5887
Version: Published
DOI: 10.1103/PhysRevB.51.5887
URI: https://dspace.lboro.ac.uk/2134/4282
ISSN: 1098-0121
Appears in Collections:Published Articles (Physics)

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