标题： 一种有效的相互作用的新解决方案 显示英文标题

标题： A new solution for effective interaction

摘要： 一种新的模型空间有效相互作用的方法被提出。 在Krenciglowa-Kuo（KK）方法中引入一个新算符代替Q盒，我们推导出有效相互作用的新方程。 这个方程可以看作是KK方法的扩展。 我们证明这个方程可以用迭代和非迭代的方式求解。 我们观察到，与KK方法相比，迭代过程能显著加速收敛。 我们还发现，非迭代计算能够成功地再现原始哈密顿量的任何一组真实本征值。 这种非迭代计算可以不受模型空间重叠大小以及未微扰能量与要解的本征值之间能量差的影响。 显示英文摘要

摘要： A new method is given for the model-space effective interaction. Introducing a new operator in place of the Q-box in the Krenciglowa-Kuo (KK) method, we derive a new equation for the effective interaction. This equation can be viewed as an extension of the KK method. We show that this equation can be solved both in iterative and non-iterative ways. We observe that the iteration procedure brings about fast acceleration of convergence compared to the KK approach. We also find that the non-iterative calculation reproduces successfully any set of the true eigenvalues of the original Hamiltonian. This non-iterative calculation can be made regardless of the magnitudes of the overlaps with the model space and the energy differences between the unperturbed energy and the eigenvalues to be solved.