2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/136438Standard density functional approximations greatly over-estimate the static polarizability of longchain polymers, but Hartree-Fock or exact exchange calculations do not. Simple self-interaction corrected (SIC) approximations can be even better than exact exchange, while their computational cost can scale only linearly with the number of occupied orbitals.4 pages, 3 figuresAtomic and Molecular ClustersMaterials ScienceComputational Physicstext