Pytiuk O. Theory of quasiparticles spectra renormalized due to multi-phonon processes in 3d and low-dimensional structures.

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0418U004262

Applicant for

Specialization

  • 01.04.02 - Теоретична фізика

30-11-2018

Specialized Academic Board

Д76.051.01

Essay

Partial summing of infinite range of diagrams for the two-phonon mass operator of polaron described by Fr?hlich Hamiltonian is performed using the Feynman-Pines diagram technique. The theory of renormalized energy spectrum of localized quasiparticle interacting with polarization phonons at finite temperature is developed within the Feynman-Pines diagram technique. Theory of the spectrum of localized two-level quasi-particle renormalized due to interaction with polarization phonons at cryogenic temperature is developed using the generalized method of Feynman-Pines diagram technique.

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