New bounds on the maximum ionization of atoms

Details New bounds on the maximum ionization of atoms New bounds on the maximum ionization of atoms

2010-09-13

arxiv.org/abs/1009.2367v3

Physics

Mathematical Physics

20 pages, revised version to appear in Commun. Math. Phys

Scientific paper

We prove that the maximum number $N_c$ of non-relativistic electrons that a nucleus of charge $Z$ can bind is less than $1.22Z+3Z^{1/3}$. This improves Lieb's upper bound $N_c<2Z+1$ [{\it Phys. Rev. A} {\bf 29}, 3018-3028 (1984)] when $Z\ge 6$. Our method also applies to non-relativistic atoms in magnetic field and to pseudo-relativistic atoms. We show that in these cases, under appropriate conditions, $\limsup_{Z\to \infty}N_c/Z \le 1.22$.

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