Universal Functionals in Density Functional Theory

Universal Functionals in Density Functional Theory
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密度泛函理论中的通用泛函

DOI:
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发表时间:
2019
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影响因子:
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通讯作者:
R. Seiringer
R. Seiringer
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作者:
Mathieu Lewin;E. Lieb;R. Seiringer

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在本章中,我们首先回顾Levy-Lieb泛函,它给出了具有给定密度的所有可能量子态所能达到的最低动能和相互作用能。我们讨论了该泛函的两种可能的凸推广,分别对应于使用混合正则态和大正则态。我们介绍了一些关于局部密度近似的最新工作,其中用单位体积均匀电子气体能量构造的纯局部泛函代替了泛函。然后我们回顾了已知的Levy-Lieb泛函的上界和下界。我们从单独的动能开始,然后转向单独的经典相互作用,在我们能够把所有的东西放在一起之前。一个附录是专门讨论霍恩伯格-科恩定理和多体唯一延拓在其证明中的作用。
In this chapter we first review the Levy-Lieb functional, which gives the lowest kinetic and interaction energy that can be reached with all possible quantum states having a given density. We discuss two possible convex generalizations of this functional, corresponding to using mixed canonical and grand-canonical states, respectively. We present some recent works about the local density approximation, in which the functionals get replaced by purely local functionals constructed using the uniform electron gas energy per unit volume. We then review the known upper and lower bounds on the Levy-Lieb functionals. We start with the kinetic energy alone, then turn to the classical interaction alone, before we are able to put everything together. An appendix is devoted to the Hohenberg-Kohn theorem and the role of many-body unique continuation in its proof.
科恩-库马尔猜想导致的库仑和里斯相互作用的结晶
DOI: 10.1090/proc/15003
发表时间: 2020
影响因子: 1
作者:
Petrache, Mircea;Serfaty, Sylvia
通讯作者: Serfaty, Sylvia