Abstract
A commonly cited reason for the success of the local spin density (LSD) approximation is that it correctly accounts for short wavelength contributions to the exchange-correlation energy. We show that this result, while true in several limits and for several approximations to these fluctuations, is not exact in general, with an analytic demonstration on a specific system (Hooke's atom). Nevertheless, we find that LSD is rather accurate for small separations.
Keywords
PhysicsWavelengthLocal-density approximationStatistical physicsExact solutions in general relativitySpin densityAtom (system on chip)Quantum mechanicsComputational physicsQuantum electrodynamicsDensity functional theoryCondensed matter physics
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Publication Info
- Year
- 1994
- Type
- article
- Volume
- 73
- Issue
- 9
- Pages
- 1283-1286
- Citations
- 65
- Access
- Closed
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Cite This
Kieron Burke,
John P. Perdew,
David C. Langreth
(1994).
Is the Local Density Approximation Exact for Short Wavelength Fluctuations?.
Physical Review Letters
, 73
(9)
, 1283-1286.
https://doi.org/10.1103/physrevlett.73.1283
Identifiers
- DOI
- 10.1103/physrevlett.73.1283