Local kinetic-energy density of the Airy gas

Levente Vitos, B. Johansson, J. Kollár, Hans Lomholt Skriver

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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((h) over bar(2)/2m)del(mu)(2)(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.
Original languageEnglish
JournalPhysical Review A
Issue number5
Pages (from-to)052511
Publication statusPublished - 2000

Bibliographical note

Copyright 2000 American Physical Society


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