Abstract
The influence of anharmonic renormalization effects on the decay dynamics of coherent longitudinal optical phonons is investigated from a microscopic point of view. The renormalization effects are found to depend on the special properties of the phonon dispersion of the given material and to induce non-Markovian decay dynamics. Non-Markovian dynamics of the decay of coherent LO-phonons is calculated for GaP and results in a 30% faster decay signal than the corresponding Markovian dynamics.
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