Finding the best approximation to the exact functional of electron density is the central challenge of density functional theory (DFT). In 2005, Zhao, Schultz and Truhlar paved the way to the development of approximate DFT functionals that can offer universally accurate treatment of different chemical systems and properties.

中文翻译：

---

追求普遍性

找到电子密度精确泛函的最佳近似值是密度泛函理论 (DFT) 的核心挑战。2005 年，Zhao、Schultz 和 Truhlar 为开发近似 DFT 泛函铺平了道路，这种泛函可以对不同的化学系统和性质提供普遍准确的处理。