ARC documentation

alternate text

ARC ( Rydberg Calculator) is package of routines written in Python, using object-oriented programming (OOP) to make modular, reusable and extendable collection of routines and data for performing useful calculations of single atom and two-atom properties, like level diagrams, interactions and transition strengths for alkali and divalent atoms.

Package structure

module overview image

Overview of modules and interdependencies in the arc package. Click on image to enlarge.

Indices and tables



Nikola Šibalić, Elizabeth J. Robertson, Jonathan D. Pritchard, Robert M. Potvliege, Matthew P. A. Jones, Charles S. Adams, Kevin J. Weatherill, and contributors.

Cite as:

If you use alkali atoms:

N. Šibalić, J. D. Pritchard, K. J. Weatherill, C. S. Adams, ARC: An open-source library for calculating properties of alkali Rydberg atoms, Computer Physics Communications 220, 319 (2017)

If you use divalent atoms or new features introduced in ARC 3.0:

E. J. Robertson, N. Šibalić, R. M. Potvliege, M. P. A. Jones, ARC 3.0: An expanded Python toolbox for atomic physics calculations, arXiv:2007.12016

In addition, if you use arc_advanced extensions check arc.advanced .


BSD 3-Clause


3.0.0 of 2020/07/27