Particles + core reduction of time-dependent Hartree-Fock

The orbitals of the TDHF determinant are divided into two classes. Those of the 'core' are described by only a few collective parameters. The remaining 'particle' orbitals are treated explicitly. A set of equations is derived describing the coupled evolution of the core and particles. The physical content and computational advantages of the method are illustrated in a one-dimensional model. (Auth.)