Abstract
Starting from the longitudinal electron-phonon Hamiltonian and performing two suitable canonical transformations, the Hamiltonian of separated plasmons and electrons is derived. The result obtained is in good agreement with the result found by the method of the extended Hamiltonian and the corresponding subsidiary conditions. The proposed approach may be appplied to those problems in which longitudinal phonons are of no interest.
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Herrn Professor Dr.Friedrich Hund zugleich im Namen von Herrn Professor Dr. I.Supek zum 70. Geburtstag gewidmet.
Herrn Prof. Dr. I.Supek und Herrn Prof. Dr. K.Ljolje bin ich für ihr Interesse an dieser Arbeit und für wertvolle Diskussionen zu Dank verpflichtet.
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Šips, V. Zur Kollektivtheorie von Bohm und Pines. Z. Physik 190, 205–208 (1966). https://doi.org/10.1007/BF01327143
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DOI: https://doi.org/10.1007/BF01327143