What’s Right and What’s Wrong with the Density-Gradient Expansions for the Exchange and Correlation Energies?

Aaron D. Kaplan, Biswajit Santra, Puskar Bhattarai, Kamal Wagle, Shah Tanvir ur Rahman Chowdhury, Pradeep Bhetwal, Jie Yu, Hong Tang, Kieron Burke, Mel Levy, John P Perdew

Preprint2020

Simple hydrogenic estimates for the exchange and correlation energies of\n atoms and atomic ions, with implications for density functional theory

Aaron D. Kaplan, Biswajit Santra, Puskar Bhattarai, Kamal C. Wagle, Shah Tanvir ur Rahman Chowdhury, Pradeep Bhetwal, Jie Yu, Hong Tang, Kieron Burke, Mel Levy, John P Perdew