Physics – Physics Education
Scientific paper
1999-03-12
Am. J. Phys. 67, 933 (1999).
Physics
Physics Education
2 pages, RevTeX
Scientific paper
10.1119/1.19156
We comment on a recent article by H. L. Neal [Am. J. Phys. 66, 512 (1998)],
in which an analytic expression for the Hohenberg-Kohn functional was derived
for one-dimensional two-particle systems with the harmonic interaction. We
argue that the functional given by Neal is not exact but really constitutes an
approximation in the same spirit as the local-density approximation.
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