arXiv:nucl-th/9911056·v1·Nuclear Theory
Beyond the time independent mean field theory for nuclear and atomic reactions: Inclusion of particle-hole correlations in a generalized random phase approximation
J.C. Lemm (1) · B.G. Giraud (2) · A. Weiguny (1) ((1) Institut fuer Theoretische Physik I, Muenster University, (2) Service de Physique Theorique, DSM-CEA Saclay)
Abstract
The time independent mean field method (TIMF) for scattering defines biorthonormal sets of single-particle wave functions and corresponding creation and annihilation operators. 2p - 2h correlations can be introduced through a generalized random phase approximation; 1p - 1h contributions vanish (Brillouin theorem). While the general variational method for scattering by Giraud and Nagarajan solves inhomogeneous Euler equations by inversion of the standard, hermitean Hamiltonian, the present approach diagonalizes a non-hermitean Hamiltonian, which carries the information about entrance and exit channels.
Comments: 4 pages, 2 figures, revtex