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- W2043924499 abstract "We study: a) “valence excitons” in interaction with longitudinal optical phonons; b) “core excitons” in interaction with the valence electron-hole pairs. We use the effective mass approximation and include the interaction with a boson field by Frölich models. We compute the lowest exciton states by solving exactly the functional Eulerian equation for the distribution function of the Boson coherent state. The relaxations of the boson field produce a screening of the electron-hole interaction and a polarization energy, which depends only on the ratios of the exciton to the polaron radii. Explicit calculations show cases with total, partial relaxation or without it. Higher energy states with the same electronic part of the wave function are also introduced. Optical transition probabilities to the excitonic states are computed in first order and give a distribution of the oscillator strength which depend on the Boson distribution function of the coherent state." @default.
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- W2043924499 date "1983-03-01" @default.
- W2043924499 modified "2023-10-02" @default.
- W2043924499 title "Excitonic polarons and core excitons: Dielectric relaxation and optical transitions" @default.
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- W2043924499 doi "https://doi.org/10.1016/0378-4363(83)90506-5" @default.
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