Density Functional Theory

The following sections are included:

• Electron densities in the Hartree and Fock-Hartree models

• Pair densities and correlation functions in the Hartree-Fock model

• Jellium model

• Computation of one functional derivative

• Computation of six functional derivatives

• Action functional and Euler-Lagrange equation

• One-electron system

• Thomas-Fermi screening

• N-representable density

• Electron-ion interaction functional

• Janak's Theorem