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Double-pole approximation in time-dependent density functional theory

机译:时变密度泛函理论中的双极点逼近

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摘要

A simple approximate solution to the linear response equations of time-dependent density functional theory (TDDFT) is given. This extends the single-pole approximation (SPA) to two strongly coupled poles. The analysis provides both an illustration of how TDDFT works when strong exchange-correlation effects are present and insight into such corrections. For example, interaction can cause a transition to vanish entirely from the optical spectrum. (C) 2006 Wiley Periodicals, Inc.
机译:给出了时变密度泛函理论(TDDFT)线性响应方程的简单近似解。这将单极点近似(SPA)扩展到两个强耦合极点。该分析提供了当存在强大的汇率相关效应时TDDFT如何工作的例证,以及对此类修正的见解。例如,相互作用会导致过渡从光谱中完全消失。 (C)2006年Wiley Periodicals,Inc.

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