A Direct Calculation of First-Order Wave Function of Helium

• 来源期刊: 理论物理通讯(英文版)
• 学科: 物理学
• 关键词: 波函数 一阶 计算 库仑相互作用 氦 函数模型 电荷屏蔽 核电荷
• 年，卷（期）: 2010,（10）
• 页码范围: 647-650
• 页数: 4页
• 分类号: O413.1 O175.1
• 语种: 英文

摘要

We develop a simple analytic calculation for the first order wave function of helium in a model in whichnuclear charge screening is caused by repulsive coulomb interaction.The perturbation term, first-order correlation energy,and first-order wave function are divided into two components, one component associated with the repulsive coulombinteraction and the other proportional to magnetic shielding.The resulting first-order wave functions are applied tocalculate second-order energies within the model.We find that the second-order energies are independent of the nuclearcharge screening constant in the unperturbed Hamiltonian with a central coulomb potential.