title: Many-body GW calculations of ground-state properties: quasi-2D electron systems and van der Waals forces.
abstract: We present GW many-body results for ground-state properties of two simple but very distinct families of inhomogeneous systems in which traditional implementations of density-functional theory (DFT) fail drastically. The GW approach gives notably better results than the well-known random-phase approximation, at a similar computational cost. These results establish GW as a superior alternative to standard DFT schemes without the expensive numerical effort required by quantum Monte Carlo simulations.
authors.affiliation: Departamento de Física Fundamental, Universidad Nacional de Educación a Distancia, Apartado 60141, 28080 Madrid, Spain.
authors.forename: P
authors.initials: P
authors.lastname: García-González
authors.forename: R W
authors.initials: RW
authors.lastname: Godby