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Analysis of the Thomas-Fermi-von Weizsäcker equation for an infinite atom without electron repulsion

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Abstract

The equation

$$\left\{ { - \Delta + |\psi (x)|^{2p - 2} - |x|^{ - 1} } \right\}\psi (x) = 0$$

in three dimensions is investigated. Uniqueness and other properties of the positive solution are proved for 3/2<p<2. There are two physical interpretations of this equation forp=5/3: (i) As the TFW equation for an infinite atomwithout electron repulsion; (ii) The positive solution, ψ, suitably scaled, is asymptotically equal to the solution of the TFW equation for an atom or moleculewith electron repulsion in the regime where the nuclear charges are large andx is close to one of the nuclei.

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Communicated by R. Jost

Work partially supported by U.S. National Science Foundation grant PHY-7825390 A02

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Lieb, E.H. Analysis of the Thomas-Fermi-von Weizsäcker equation for an infinite atom without electron repulsion. Commun.Math. Phys. 85, 15–25 (1982). https://doi.org/10.1007/BF02029130

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