In https://github.com/sympy/sympy/pull/1699 in group_factors the theoretical group factors for SU(N) are computed; for instance in test_group_factors it is computed the group factor for the four-loop gluon Feynman graph in eq.(1.1) of P. Cvitanovic "Group Theory"
On Saturday, June 29, 2013 7:18:30 AM UTC+2, Matthew wrote: > > Has there been any work on implementing Feynman diagrams in sympy? Any > thoughts on this topic? > -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sympy+unsubscr...@googlegroups.com. To post to this group, send email to sympy@googlegroups.com. Visit this group at http://groups.google.com/group/sympy. For more options, visit https://groups.google.com/groups/opt_out.
