Published Codes

Most of our research has a computational aspect. Code development is usually performed locally, but sometimes in collaboration with other groups of people.

Here we list our codes that have been officially published.


An easy-to-install library that evaluates Wigner 3j, 6j and 9j symbols accurately using prime factorisation and multi-word integer arithmetic. The code is written in C and has interfaces for Python, C and Fortran.

Developed by Håkan Johansson and Christian Forssén.

Published in arXiv:1504.08329

Code repository:


A no-core shell model code developed in C.

Developed by Tor Djärv.

Collaborators: Håkan Johansson, Christian Forssén and Andreas Ekström

Published in: arXiv:2108.13313

Code repository: