2011/09/12 by Claudio Attaccalite, C. Attaccalite, Myrta Grüning +3 · 1 voice · 2 citations
Materials Science · Physics and Astronomy · #Boron and Carbon Nanomaterials Research #Nonlinear Optical Materials Research #Quantum and electron transport phenomena #cond-mat.mes-hall #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevb.84.245110
10 pages, 4 figures
arxiv created 2011/09/12 · openalex publication_date 2011/12/13 · arxiv updated 2015/05/29 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/04
Many-body effects are known to play a crucial role in the electronic and optical properties of solids and nano-structures. 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 a novel 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 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 \it h-BN.