Journal
MOLECULAR PHYSICS
Volume 114, Issue 7-8, Pages 1036-1040Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/00268976.2015.1130273
Keywords
Thomas-Fermi theory; atomic radii; Born-Oppenheimer curves; Hartree-Fock theory; ionisation conjecture
Funding
- European Research Council under ERC [321029]
- Villum Fonden [00010059] Funding Source: researchfish
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In this short note, we argue that Thomas-Fermi theory, the simplest of all density functional theories, although failing to explain features such as molecular binding or stability of negative ions, is surprisingly accurate in estimating sizes of atoms. We give both numerical, experimental and rigorous mathematical evidence for this claim. Motivated by this, we formulate two new mathematical conjectures on the exactness of Thomas-Fermi theory. [GRAPHICS] .
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