title: Development of New Density Functional Approximations.
abstract: Kohn-Sham density functional theory has become the leading electronic structure method for atoms, molecules, and extended systems. It is in principle exact, but any practical application must rely on density functional approximations (DFAs) for the exchange-correlation energy. Here we emphasize four aspects of the subject: (a) philosophies and strategies for developing DFAs; (b) classification of DFAs;
authors.affiliation: Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University, Shanghai 200433, China; email: xxchem@fudan.edu.cn.|Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, China.|MOE Key Laboratory of Computational Physical Sciences, Fudan University, Shanghai 200433, China.|Department of Chemistry, Fudan University, Shanghai 200433, China.
authors.forename: Neil Qiang
authors.initials: NQ
authors.lastname: Su
authors.affiliation: Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University, Shanghai 200433, China; email: xxchem@fudan.edu.cn.|Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, China.|MOE Key Laboratory of Computational Physical Sciences, Fudan University, Shanghai 200433, China.|Department of Chemistry, Fudan University, Shanghai 200433, China.
authors.forename: Xin
authors.initials: X
authors.lastname: Xu
keywords: density functional theory; exchange-correlation functional; many-body interactions