The library of subroutines for calculation of matrix elements of two-particle operators for many-electron atoms

Details The library of subroutines for calculation of matrix elements of two-particle operators for many-electron atoms The library of subroutines for calculation of matrix elements of two-particle operators for many-electron atoms

2004-05-14

arxiv.org/abs/physics/0405072v1

Lithuanian Journal of Physics 42 (2002) 73-86

Physics

Atomic Physics

Scientific paper

In this paper a library for spin--angular integration in LS-coupling for many-electron atoms is presented. The software is an implementation of a methodology based on the second quantization in coupled tensorial form, the angular momentum theory in 3 spaces (orbital, spin and quasispin), and the graphical technique of angular momentum. This implementation extends applications of the relevant methodology to open f- shells and leads to faster execution of angular integration codes. The possibility of using some library routines for solving various angular momentum problems in atomic physics is also discussed.

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