A program for performing a numerical integration of the Schrödinger equation

Title of program: DIFEQ Catalogue Id: ACCC_v1_0 Nature of problem Differential equations of the form psi''(x) + (lambda-V(x))psi(x)=0, x in range (a,b) with boundary conditions psi(a)=psi(b)=0 are solved. The main purpose of this paper is to present a perturbative procedure for the calculations of approximate eigenvalues of the Schroedinger equation. Versions of this program held in the CPC repository in Mendeley Data ACCC_v1_0; DIFEQ; 10.1016/0010-4655(84)90072-9 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)程序名称：DIFEQ，目录编号：ACCC_v1_0。 求解问题： 求解形如ψ''(x) + (λ - V(x))ψ(x) = 0（x∈区间(a,b)）且满足边界条件ψ(a)=ψ(b)=0的微分方程。本程序的核心目标是提出一种微扰方法，用于计算薛定谔方程(Schrödinger equation)的近似本征值。 Mendeley Data收录的CPC程序库内本程序的版本信息：ACCC_v1_0; DIFEQ; 10.1016/0010-4655(84)90072-9 本程序源自贝尔法斯特女王大学维护的CPC程序库（1969-2019）。