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Effect of the Polariton–Phonon Coupling on the Spatial Dispersion
Author(s) -
Hizhnyakov V. V.
Publication year - 1969
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.19690340143
Subject(s) - polariton , renormalization , condensed matter physics , coupling constant , phonon , physics , transverse plane , coupling (piping) , dispersion (optics) , dispersion relation , dielectric , constant (computer programming) , spatial dispersion , quantum electrodynamics , quantum mechanics , materials science , optics , structural engineering , computer science , engineering , metallurgy , programming language
A formula is obtained for the transverse dielectric constant ϵ t (ω, k ) in the region of exciton transition which appears to be correct for an arbitrary intensity of the polariton—phonon coupling. The renormalization of polaritons caused by this coupling and the influence of the renormalization on the damping constant of ϵ t (ω, k ) are examined.