Method of successive separation and summing of multiplicative diagrams of mass operator for the multi-level quasiparticle interacting with polarization phonons

The theory of renormalized energy spectrum of a multi-level quasiparticle interacting with polarization phonons at T = 0 K is developed within the Feynman-Pines diagram technique in a new approach. It permits a successive separation of multiplicative diagrams from non-multiplicative ones for all ord...

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Bibliographic Details

Published in:	Condensed Matter Physics
Main Authors:	M.V. Tkach, Ju.O. Seti, O.M. Voitsekhivska, V.V. Gutiv
Format:	Article
Language:	English
Published:	Yukhnovskii Institute for Condensed Matter Physics of the National Academy of Sciences of Ukraine 2019-09-01
Subjects:	diagram technique quasiparticle mass operator phonon spectrum
Online Access:	https://doi.org/10.5488/CMP.22.33703