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- W4285044893 startingPage "193" @default.
- W4285044893 abstract "Ground-state Kohn-Sham density functional theory provides, in principle, the exact ground-state energy and electronic spin-densities of real interacting electrons in a static external potential. In practice, the exact density functional for the exchange-correlation (xc) energy must be approximated in a computationally efficient way. About twenty mathematical properties of the exact xc functional are known. In this work, we review and discuss these known constraints on the xc energy and hole. By analyzing a sequence of increasingly sophisticated density functional approximations (DFAs), we argue that: (1) the satisfaction of more exact constraints and appropriate norms makes a functional more predictive over the immense space of many-electron systems; (2) fitting to bonded systems yields an interpolative DFA that may not extrapolate well to systems unlike those in the fitting set. We discuss how the class of well-described systems has grown along with constraint satisfaction, and the possibilities for future functional development." @default.
- W4285044893 created "2022-07-13" @default.
- W4285044893 creator A5014987686 @default.
- W4285044893 creator A5032939678 @default.
- W4285044893 creator A5065000056 @default.
- W4285044893 date "2023-04-24" @default.
- W4285044893 modified "2023-10-10" @default.
- W4285044893 title "The Predictive Power of Exact Constraints and Appropriate Norms in Density Functional Theory" @default.
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