SEARCH Articles Figures Tables Density functional theory many-electron system energy Entropy Deficiency Partitioning of Many-Electron Densities Local density approximation many-body wavefunction Many body density matrix Many particle system density operator Many-electron densities Many-electron methods 2-particle density matrix Many-electron systems correlation densities Many-electron systems distribution densities Many-point densities Reduced-Density-Matrix Mechanics . With Application to Many-Electron Atoms and Molecules The many to one correspondence between wavefunctions and densities Time-dependent density functional theory many-body system