Many Body Theory of the Formation and Dynamics of Excitons in an Electron-Hole Gas at Low Temperatures

TitreMany Body Theory of the Formation and Dynamics of Excitons in an Electron-Hole Gas at Low Temperatures
Type de publicationJournal Article
Nouvelles publications1987
AuteursCôté, R, Griffin, A
JournalJapanese Journal of Applied Physics
Volume26S3
Pagination685-686
Résumé
Using functional differentiation to obtain the two-particle Green's functions, we give a systemmatic discussion of the collective modes in an electron-hole gas at low temperatures. Our analysis is based on the well known pairing approximation for the single particle self-energies and corresponds to the generalized RPA. The excitons with finite momentum appear as fluctuations of the electron-hole condensate and have a linear dispersion relation (Keldysh and Kozlov).
URLhttp://jjap.ipap.jp/link?JJAPS/26S3/685/
Texte complet
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