Density Functionals Not Based on the Electron Gas: Local-Density Approximation for a Luttinger Liquid
Density Functionals Not Based on the Electron Gas: Local-Density Approximation for a Luttinger Liquid
By shifting the reference system for the local-density approximation (LDA) from the electron gas to other model systems, one obtains a new class of density functionals, which by design account for the correlations present in the chosen reference system. This strategy is illustrated by constructing an explicit LDA for the …