The Effect of Phonon Relaxation Process on Absorption Spectra

Abstract

In this work we study the effect of phonon relaxation process on the  absorption spectra using the Green’s function technique. The Green’s function technique which is widely used in many particle problems is used to solve the Kubo formula which describes the optical absorption process. Finally the configurational diagram is used to explain the absorption and emission process.

Key words: Phonon relaxation process, absorption spectra, Green’s function, Kubo formula, configurational coordinate diagram.