Finite amplitude method for the solution of the random-phase approximation
Finite amplitude method for the solution of the random-phase approximation
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DOI：
10.1103/physrevc.76.024318
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发表时间：
2007-03
影响因子：
3.1
通讯作者：
T. Nakatsukasa;T. Inakura;K. Yabana
中科院分区：
文献类型：
--
作者：
T. Nakatsukasa;T. Inakura;K. Yabana
提出了一种求解自洽Hartree-Fock(HF)和密度泛函理论中随机位相近似(RPA)的实用方法。该方法基于利用单粒子波函数的有限振幅对剩余相互作用进行数值计算。该方法只需要计算由独立的BRAB态和KET态构成的单粒子哈密顿量。使用本方法，只需对静态高频计算的数值代码稍作扩展，就可以进行RPA计算。我们通过对变形的{sup 20}Ne的等标量响应进行测试计算，证明了本方法的有效性和准确性。
We propose a practical method for solving the random-phase approximation (RPA) in the self-consistent Hartree-Fock (HF) and density-functional theory. The method is based on numerical evaluation of the residual interactions utilizing the finite amplitude of single-particle wave functions. The method only requires calculations of the single-particle Hamiltonian constructed with independent bra and ket states. Using the present method, the RPA calculation becomes possible with a little extension of a numerical code of the static HF calculation. We demonstrate the usefulness and accuracy of the present method by performing test calculations for isoscalar responses in deformed {sup 20}Ne.