Summary
We derive the existence of Hopf subalgebras generated by Green’s functions in the Hopf algebra of Feynman graphs of a quantum field theory. This means that the coproduct closes on these Green’s functions. It allows us for example to derive Dyson’s formulas in quantum electrodynamics relating the renormalized and bare proper functions via the renormalization constants and the analogous formulas for non-abelian gauge theories. In the latter case, we observe the crucial role played by Slavnov–Taylor identities.
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van Suijlekom, W.D. (2010). Multiplicative Renormalization and Hopf Algebras. In: Ceyhan, Ö., Manin, Y.I., Marcolli, M. (eds) Arithmetic and Geometry Around Quantization. Progress in Mathematics, vol 279. Birkhäuser Boston. https://doi.org/10.1007/978-0-8176-4831-2_10
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DOI: https://doi.org/10.1007/978-0-8176-4831-2_10
Publisher Name: Birkhäuser Boston
Print ISBN: 978-0-8176-4830-5
Online ISBN: 978-0-8176-4831-2
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