The aim of this workshop is to assess the present status, the latest achievements and future perspectives of ab-initio, first principles theories for the calculation of excitations, excited state properties and spectroscopy in condensed matter and in particular nanostructures, systems with increasing complexity, and materials of technological and biological interest.

The workshop belongs to a series of annual events organized by the Nanoquanta european network and with also the participation of the coordinator of the American projects FEFF and CSMN.

Topics of the workshop are many-body perturbation theory (MBPT), GW approximation, Bethe-Salpeter equation (BSE), ab-initio quantum transport, developments of density-functional theory (DFT). This year workshop's edition will focus in particular on time-dependent density-functional theory (TDDFT) and its most recent developments that have made it a valid alternative to the Bethe-Salpeter Equation approach for the accurate calculation of optical and dielectric spectra. Open questions, achievements, advantages, and drawbacks of TDDFT will be contrasted with those of other approaches, specifically the BSE, in order to stimulate discussions about the future of the field and to bring together scientists from different communities related to electronic excitations.