Essentially distinct Hugenholtz diagrams for free energy. This code generates all linked and essentially (unlabeled) distinct vacuum Hugenholtz-type diagrams of free energy up to arbitrary order using many-body perturbation series. The output results are shown as lists of integers which present the sites of suitable vertex of each diagram with its symmetry factor.
To support us, please cite the paper:
M. A. Tag and S. Khne, Int. J. Mod. Phys. C 28, 1750113 (2017).