Modifying the variational principle in the action-integral-functional derivation of time-dependent density-functional theory
According to a recent paper by G. Vignale [Phys. Rev. A 77, 062511 (2008)], the problems arising in the original derivation of time-dependent density-functional theory based on the Runge-Gross (RG) action-integral functional (AIF) are because of an incorrect variational principle (VP). This argument...
Saved in:
| Main Author: | |
|---|---|
| Format: | Article (Journal) |
| Language: | English |
| Published: |
11 November 2010
|
| In: |
Physical review. A, Atomic, molecular, and optical physics
Year: 2010, Volume: 82, Issue: 5, Pages: 1-5 |
| ISSN: | 1094-1622 |
| DOI: | 10.1103/PhysRevA.82.052510 |
| Online Access: | Resolving-System, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevA.82.052510 Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevA.82.052510 
|
| Author Notes: | J. Schirmer |
| Summary: | According to a recent paper by G. Vignale [Phys. Rev. A 77, 062511 (2008)], the problems arising in the original derivation of time-dependent density-functional theory based on the Runge-Gross (RG) action-integral functional (AIF) are because of an incorrect variational principle (VP). This argument and the proposed modification of the VP are critically analyzed. The more fundamental problem, though, is the indefiniteness of the RG AIF. In contrast to a widely held belief the indefiniteness is not eliminated in the variational procedure, which unwittingly is corroborated by Vignale’s initial point. |
|---|---|
| Item Description: | Gesehen am 07.06.2023 |
| Physical Description: | Online Resource |
| ISSN: | 1094-1622 |
| DOI: | 10.1103/PhysRevA.82.052510 |