Time-dependent coupled-cluster approximation to nuclear dynamics. I. Application to a solvable model

作者：Pervez Amirali Hoodbhoy, John W. Negele · 发表于：Physical Review C · 年份：1978 · DOI：10.1103/physrevc.18.2380 · 被引用次数：65 · 研究领域：Cold Atom Physics and Bose-Einstein Condensates、Quantum, superfluid, helium dynamics、Spectroscopy and Quantum Chemical Studies

A general hierarchy of approximations to the many-body Schr\"odinger equation is presented which reduces to the time-dependent mean-field approximation in lowest order and provides systematic corrections in subsequent orders. The theory is applied to two interacting systems described by the Lipkin model Hamiltonian. Comparison of the results of the lowest two orders of approximation with the exact solution demonstrates the practicality of the method and its potential for generalizing nuclear dynamics beyond the mean field theory.NUCLEAR STRUCTURE Time-dependent approximation to nuclear dynamics. Corrections to time-dependent mean-field theory. Solution of Lipkin model for two interacting systems.