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| Item Type: | Article |
|---|---|
| Title: | Analysis of correlation and ionization from pair distributions in many-electron systems |
| Creators Name: | López-Rosa, S., Angulo, J. C., Martín, A. L. and Antolín, J. |
| Abstract: | Jensen–Shannon divergence is used to quantify the discrepancy between the Hartree–Fock pair density and the product of its marginals for different N-electron systems, enclosing neutral atoms (with nuclear charge Z=N) and singly-charged ions (N=Z±1). This divergence measure is applied to determine the interelectronic correlation in atomic systems. A thorough study was carried out, by considering (i) both position and momentum conjugated spaces, and (ii) systems with a nuclear charge as far as Z=103. The correlation among electrons was measured by comparing, for an arbitrary system, the double-variable electron-pair density with the product of the respective one-particle densities. A detailed analysis throughout the Periodic Table highlights the relevance not only of weightiness for the systems considered, but also of their shell structure. Besides, comparative computations between two-electron densities of different atomic systems (neutrals, cations, anions) quantify their dissimilarities, patently governed by shell-filling patterns throughout the Periodic Table. |
| Source: | European Physical Journal Plus |
| ISSN: | 2190-5444 |
| Publisher: | Springer |
| Volume: | 136 |
| Number: | 7 |
| Page Range: | 763 |
| Date: | 22 July 2021 |
| Official Publication: | https://doi.org/10.1140/epjp/s13360-021-01747-8 |
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