1 citations · 1 across the 2 of their papers we have counts for
2 papers
hep-th2004
Hopf Algebraic Structures in the Cutting Rules
Yong Zhang
Since the Connes--Kreimer Hopf algebra was proposed, revisiting present quantum field theory has become meaningful and important from algebraic points. In this paper, the Hopf alge…
hep-th2002★ 1 cited
Hopf Algebraic Structures in Proving Perturbative Unitarity
Yong Zhang
The coproduct of a Feynman diagram is set up through identifying the perturbative unitarity of the S-matrix with the cutting equation from the cutting rules. On the one hand, it in…