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arXiv · 1203.5052

Runge-Gross action-integral functional re-examined

J. Schirmer
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Abstract

The density-based action-integral functional introduced by Runge and Gross [Phys. Rev. Lett. 52, 997(1984)] in their foundation of time-dependent density-functional theory (TDDFT) is re-examined. Based on an obvious expansion of the original definition, it becomes apparent that the action-integral functional is both trivial and non-stationary. It cannot be used to establish equations of motion for the time-evolution of quantum systems at the density-function level.

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J. Schirmer. 2012-03-22. Runge-Gross action-integral functional re-examined. https://doi.org/10.1103/physreva.86.012514

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