Quasiparticle and exciton renormalization effects in electrostatically doped semiconducting carbon nanotubes

► We study electronic and optical properties of doped semiconducting carbon nanotubes. ► We use a new many-body ab initio approach and a new compact model for excitons. ► Significant renormalization of quasiparticle and optical gaps arise due to doping. ► Renormalization effects are tunable as function of doping concentration. ► The tunability is due to acoustic plasmons.