Memory and correlation effects in the exciton-phonon kinetics

TL;DR

This paper investigates how memory and correlation effects influence exciton-phonon kinetics in quantum wells, revealing that these effects increase interpeak absorption due to frequency-dependent self energy.

Contribution

It demonstrates the significance of memory and correlation effects in exciton-phonon interactions using a 2nd Born theory approach, highlighting their impact on absorption spectra.

Findings

Interpeak absorption increases when memory and correlation effects are included.

Memory and correlation effects are linked to the frequency dependence of the self energy.

The study emphasizes the importance of these effects in exciton-phonon dynamics.

Abstract

Memory and correlation effects in the interband absorption from quantum wells due to exciton-phonon dynamics are investigated. They are traced back to the frequency dependence and matrix character of the self energy arising in a 2nd Born theory. It is found that interpeak absorption increases with respect to the case in which this memory and correlation effects are neglected.