Examining the justification for the introduction of a fermion localization function
| Autor: | Bulgac, Aurel |
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| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Phys. Rev. C, 108, L051303 (2023) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevC.108.L051303 |
| Popis: | Becke and Edgecombe suggested in 1990 a theoretical tool to describe electron localization in atoms and molecules, an idea which was borrowed by a large number of nuclear theorists since 2011 to describe nucleon localization in nuclear systems. I argue here that these arguments are highly questionable and cannot be used in interacting systems, where effects beyond the naive mean field or the simple Hartree-Fock framework are important and the inclusion of correlations induced by particle interactions is necessary in order to introduce such a localization function. I also describe several aspects of the exchange and irreducible 2-body density matrices, which depend on the character and strength of the 2-particle interaction and, which can be useful in justifying the derivation of an appropriate energy density functional. Comment: 8 pages, title changed, text and references augmented |
| Databáze: | arXiv |
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