title: DFT: A Theory Full of Holes?
abstract: This article is a rough, quirky overview of both the history and present state of the art of density functional theory. The field is so huge that no attempt to be comprehensive is made. We focus on the underlying exact theory, the origin of approximations, and the tension between empirical and nonempirical approaches. Many ideas are illustrated on the exchange energy and hole. Features unique to this article include how approximations can be systematically derived in a nonempirical fashion and a survey of warm dense matter.
authors.affiliation: Department of Chemistry, University of California, Irvine, California 92697-2025; email: apribram@uci.edu.
authors.forename: Aurora
authors.initials: A
authors.lastname: Pribram-Jones
authors.forename: David A
authors.initials: DA
authors.lastname: Gross
authors.forename: Kieron
authors.initials: K
authors.lastname: Burke
mesh_terms: D000465:Algorithms; D004583:Electrons; D008958:Models, Molecular; D011789:Quantum Theory
keywords: approximations; density functional theory; electronic structure; nonempiricism; semiclassics; warm dense matter