Gradient expansion of the atomic kinetic
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Wen-Ping Wang; Robert G. Parr; Danny R. Murphy; George A. Henderson
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Article
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1976
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Elsevier Science
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English
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It IS dcmonstratcd th.!t the ground-state atomic kinetic energy functlonal T[p] , wluxe p is the electron density, can bc computed to surprrsing accuracy from the truncated gradient cupanslon: T[p] = To[pJ + Tz [p] f Tq[pj, wrth To[p] = 1\_:(3n2)2'3 1~"~ dT. Tz[P] = +2 JW/J)~P-~ dr, and 'T,4 [p] giv