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Some connections between Dirac-Fock and Electron-Positron Hartree-Fock

Séré, Eric; Esteban, Maria J.; Barbaroux, Jean-Marie (2005), Some connections between Dirac-Fock and Electron-Positron Hartree-Fock, Annales Henri Poincaré, 6, 1, p. 85-102. http://dx.doi.org/10.1007/s00023-005-0199-7

Type
Article accepté pour publication ou publié
External document link
http://hal.archives-ouvertes.fr/hal-00012913/en/
Date
2005
Journal name
Annales Henri Poincaré
Volume
6
Number
1
Pages
85-102
Publication identifier
http://dx.doi.org/10.1007/s00023-005-0199-7
Metadata
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Author(s)
Séré, Eric
Esteban, Maria J. cc
Barbaroux, Jean-Marie
Abstract (EN)
We study the ground state solutions of the Dirac-Fock model in the case of weak electronic repulsion, using bifurcation theory. They are solutions of a min-max problem. Then we investigate a max-min problem coming from the electron-positron field theory of Bach-Barbaroux-Helffer-Siedentop. We show that given a radially symmetric nuclear charge, the ground state of Dirac-Fock solves this max-min problem for certain numbers of electrons. But we also exhibit a situation in which the max-min level does not correspond to a solution of the Dirac-Fock equations together with its associated self-consistent projector.
Subjects / Keywords
Mathematics; Mathematical Physics; Physics; Quantum Algebra

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