The Airy gas model is used to derive an expression for the local kinetic energy in the linear potential approximation. The expression contains an explicit Laplacian term 2/5(ℏ2/2m)∇μ2(r) that, according to jellium surface calculations, must be a universal feature of any accurate local description. Applied to the noble gases the expression reduces the errors by a factor of 50 over previous results obtained by the linear potential approximation.
|Number of pages||4|
|Journal||Physical Review A - Atomic, Molecular, and Optical Physics|
|Publication status||Published - May 2000|
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics