J. Phys. IV France 10 (2000) Pr5-359-Pr5-362
The charged Bose condensate within the RPA : Effective potential and bound states between charged particlesA. Ghazali1 and A. Gold2
1 Groupe de Physique des Solides, Universités Paris 7 et Paris 6, UMR 7588 du CNRS, 2 place Jussieu, 75251 Paris, France
2 Centre d'Élaboration de Materiaux et d'Études Structurales, CEMES-CNRS, 29 rue Jeanne Marvig, 31055 Toulouse, France
We describe the screening properties of a three- and two-dimensional charged Bose condensate within the random-phase approximation (RPA). The screened interaction for particles with opposite (attractive) and equal (repulsive) charges is calculated. Using the matrix diagonalization method we determine the energies of the ground state and the excited states of charged particles screened by the Bose condensate as functions of the condensate density.
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