Abstract
In the ground state the pair density can be determined by solving of an equation of a two-particle problem. The problem of an arbitrary system with even electrons is reduced to a two-particle problem. The effective potential of this two-particle equation has a term that is the functional derivative of the difference in the kinetic energies of the real system and an auxiliary system with respect to the pair density.
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Nagy, Á. (2003). Pair Density Functional Theory. In: Gidopoulos, N.I., Wilson, S. (eds) The Fundamentals of Electron Density, Density Matrix and Density Functional Theory in Atoms, Molecules and the Solid State. Progress in Theoretical Chemistry and Physics, vol 14. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-0409-0_7
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DOI: https://doi.org/10.1007/978-94-017-0409-0_7
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