Geodesic
Combinatorial Hopf Algebraic Description of the Multi-Scale Renormalization in Quantum Field Theory
Séminaire lotharingien de combinatoire, Tome 70 (2013-2014)

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We define combinatorial Hopf algebras on assigned Feynman graphs and on Gallavotti-Nicol\`o trees, which we then prove to underly the multi-scale renormalization in quantum field theory. Moreover, homomorphisms between these Hopf algebras and the Connes-Kreimer Hopf algebras on rooted trees and on Feynman graphs are given. Finally, we show how this formalism can be used to investigate some algebraic properties of the effective expansion in multi-scale renormalization. 

@article{SLC_2013-2014_70_a2,
     author = {Thomas Krajewski and Vincent Rivasseau and Adrian Tanasa},
     title = {Combinatorial {Hopf} {Algebraic} {Description} of the {Multi-Scale} {Renormalization} in {Quantum} {Field} {Theory}},
     journal = {S\'eminaire lotharingien de combinatoire},
     publisher = {mathdoc},
     volume = {70},
     year = {2013-2014},
     url = {http://geodesic.mathdoc.fr/item/SLC_2013-2014_70_a2/}
}
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AU  - Thomas Krajewski
AU  - Vincent Rivasseau
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JO  - Séminaire lotharingien de combinatoire
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Thomas Krajewski; Vincent Rivasseau; Adrian Tanasa. Combinatorial Hopf Algebraic Description of the Multi-Scale Renormalization in Quantum Field Theory. Séminaire lotharingien de combinatoire, Tome 70 (2013-2014). http://geodesic.mathdoc.fr/item/SLC_2013-2014_70_a2/