Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Breit interaction / operator negative-energy

Here frs and (ri-l tM> are, respectively, elements of one-electron Dirac-Fock and antisymmetrized two-electron Coulomb-Breit interaction matrices over Dirac four-component spinors. The effect of the projection operators is now taken over by the normal ordering, denoted by the curly braces in (15), which requires annihilation operators to be moved to the right of creation operators as if all anticommutation relations vanish. The Fermi level is set at the top of the highest occupied positive-energy state, and the negative-energy states are ignored. [Pg.164]


See other pages where Breit interaction / operator negative-energy is mentioned: [Pg.317]    [Pg.737]    [Pg.13]   
See also in sourсe #XX -- [ Pg.165 ]




SEARCH



Breit interaction

Breit interaction / operator

Energy negative

Energy operator

Interaction energy

Interaction operators

© 2024 chempedia.info