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arXiv 0812.1207cond-mat.str-elcond-mat.mtrl-sci
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多构型Kohn-Sham方法分析

Analysis of multi-configuration Kohn-Sham methods

Yair Kurzweil, M. Head-Gordon

摘要:

我们考虑扩展的标准单行列式Kohn-Sham方法的情况下,一个多组态的试探波函数。通过应用严格的Kohn-Sham方法,我们构造了适当的相互作用和非相互作用能量泛函。根据这两个能量泛函的Hohenberg-Kohn定理,我们导出了相应的多组态Kohn-Sham方程。在分析的最后,我们表明,在基态,多组态波函数必须崩溃成一个单一的行列式波函数,等于正规KS波函数。我们还讨论了在其他多组态密度泛函理论方法中,当辅助系统部分相互作用时,波函数的非坍缩性。

英文摘要:

We consider the extension of the standard single-determinant Kohn-Sham method to the case of a multiconfiguration trial wavefunction. By applying the rigorous Kohn-Sham method to this case, we construct the proper interacting and non-interacting energy functionals. Following the Hohenberg-Kohn theorem for both energy functionals, we derive the corre-sponding multiconfiguration Kohn-Sham equations. At the end of the analysis we show that, at the ground state, the multiconfiguration wavefunction must collapse into a single-determinant wavefunction, equal to the regular KS wavefunction. We also discuss the non-collapse of the wavefunction in other multiconfiguration density functional theory methods where the auxiliary system is partially interacting.

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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