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Program to calculate pure angular momentum coefficients in jj-coupling

机译:程序计算JJ耦合中纯角动量系数

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摘要

A program for computing pure angular momentum coefficients in relativistic atomic structure for any scalar one- and two- particle operator is presented. The program, written in Fortran 90/95 and based on techniques of second quantization, irreducible tensorial operators, quasispin and the theory of angular momentum, is intended to replace existing angular coefficient modules from GRASP92. The new module uses a different decomposition of the coefficients as sums of products of pure angular momentum coefficients, which depend only on the tensor rank of the interaction but not on its details, with effective interaction strengths of specific interactions. This saves memory and reduces the computational cost of big calculations significantly.
机译:提出了一种用于计算任何标量和双粒子算子的相对论原子结构中的纯角动量系数的程序。 在Fortran 90/95中编写的程序以及基于第二量化的技术,不可缩短的姿态运营商,拟查术和角动量理论,旨在取代来自GRASP92的现有角度系数模块。 新模块使用系数的不同分解作为纯角动量系数的产物的和,只依赖于相互作用的张量等级,而不是其细节,具有有效的特定相互作用的相互作用优势。 这节省了内存并显着降低了大计算的计算成本。

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