421 citations · 1.5k across the 60 of their papers we have counts for
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hep-th1999★ 21 cited
On the trees of quantum fields
Ch. Brouder
The solution of some equations involving functional derivatives is given as a series indexed by planar binary trees. The terms of the series are given by an explicit recursive form…
hep-th1999★ 60 cited
Runge-Kutta methods and renormalization
Christian Brouder
A connection between the algebra of rooted trees used in renormalization theory and Runge-Kutta methods is pointed out. Butcher's group and B-series are shown to provide a suitable…