2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/108280An exchange energy functional is proposed and tested for obtaining a class of excited-state energies using density functional formalism. The functional is the excited-state counterpart of the local-density approximation functional for the ground state. It takes care of the state dependence of the energy functional and leads to highly accurate excitation energies.Materials ScienceLocal-density approximation for exchange energy functional in excited-state density functional theorytext