COLLECTIVE EXCITATIONS AND SCREENING PROPERTIES OF A CONDENSED CHARGED BOSE-GAS

被引：23

作者：

ALEXANDROV, AS

BEERE, WH

机构：

[1] Interdisciplinary Research Center in Superconductivity, University of Cambridge, Cambridge, CB3 0HE, Madingley Road

来源：

PHYSICAL REVIEW B | 1995年 / 51卷 / 09期

关键词：

D O I：

10.1103/PhysRevB.51.5887

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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. © 1995 The American Physical Society.

引用

页码：5887 / 5891

页数：5

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