Real-time approach to the optical properties of solids and nanostructures: Time-dependent Bethe-Salpeter equation

C. Attaccalite, M. Gruning, A. Marini

Research output: Contribution to journalArticlepeer-review

63 Citations (Scopus)

Abstract

Many-body effects are known to play a crucial role in the electronic and optical properties of solids and nanostructures. Nevertheless, the majority of theoretical and numerical approaches able to capture the influence of Coulomb correlations are restricted to the linear response regime. In this work, we introduce an approach based on a real-time solution of the electronic dynamics. The proposed approach reduces to the well-known Bethe-Salpeter equation in the linear limit regime and it makes it possible, at the same time, to investigate correlation effects in nonlinear phenomena. We show the flexibility and numerical stability of the proposed approach by calculating the dielectric constants and the effect of a strong pulse excitation in bulk h-BN.

Original languageEnglish
Article number245110
Pages (from-to)1-9
Number of pages9
JournalPhysical Review B (Condensed Matter)
Volume84
Issue number24
DOIs
Publication statusPublished - 13 Dec 2011

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