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Kohn--Sham 密度泛函理论中交换相关势与交换相关泛函的表达式

Expressions for the Exchange Correlation Potential and Exchange Correlation Functional of Kohn--Sham Density Functional Theory

James P. Finley

AI总结:

本文基于 State--Specific Kohn--Sham Density Functional Theory,推导出 Kohn-Sham 交换相关势与交换相关能作为局域单体势和无自旋单粒子密度矩阵的显式泛函,并限定了闭壳层非相互作用态与非简并单重态基态的条件。

摘要:

本文利用 State--Specific Kohn--Sham Density Functional Theory [arXiv:physics/0506037],推导出 Kohn-Sham 交换相关势 $\vxc$ 与交换相关能 $\Eco$ 作为 $v_s$ 和 $ϕ_1$ 的显式泛函,其中 $v_s$ 是 Kohn--Sham 方程的局域单体势,$ϕ_1$ 是 Kohn--Sham 非相互作用态(即 $|ϕ_1\ran$)的无自旋单粒子密度矩阵。换言之,$|ϕ_1\ran$ 是具有单体势 $v_s$ 的非相互作用 Schrödinger 方程的基态本征函数。为简化处理,我们仅考虑闭壳层态的非相互作用态以及非简并单重态基态的相互作用态。

英文摘要:

The State--Specific Kohn--Sham Density Functional Theory [arXiv:physics/0506037] is used to derive the Kohn-Sham exchange-correlation potential $\vxc$ and exchange-correlation energy $\Eco$ as explicit functionals of $v_s$ and $ϕ_1$, where $v_s$ is the local, one-body potential from the Kohn--Sham equations, and $ϕ_1$ is the spinless one-particle density matrix from the Kohn--Sham noninteracting state, say $|ϕ_1\ran$. In other words, $|ϕ_1\ran$ is the ground state eigenfunction of the noninteracting Schrödinger equation with the one-body potential $v_s$. For simplicity, we only consider noninteracting states that are closed-shell states and interacting states that are nondegenerate, singlet ground-states.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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