2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/160617We calculate, within the leading-order dynamical-screening approximation, the electron self-energy and spectral function at zero temperature for extrinsic (or gated/doped) graphene. We also calculate hot carrier inelastic scattering due to electron-electron interactions in graphene. We obtain the inelastic quasiparticle lifetimes and associated mean free paths from the calculated self-energy. The linear dispersion and chiral property of graphene gives energy dependent lifetimes that are qualitatively different from those of parabolic-band semiconductors.Submitted on July 8, 2007 to EP2DS-17, Genova, ItalyMesoscale and Nanoscale Physicstext