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Showing 2011 · hep-thShow all
2 papers · 2 filters
hep-th2011★ 24 cited
Momentum routing invariance in Feynman diagrams and quantum symmetry breakings
L. C. Ferreira, A. L. Cherchiglia, Brigitte Hiller +2
We illustrate with examples that quantum symmetry breakings in perturbation theory are connected to breakdown of momentum routing invariance (MRI) in the loops of a Feynman diagram…
hep-th2011★ 30 cited
Quantum gravitational contributions to the beta function of quantum electrodynamics
J. C. C. Felipe, L. C. T. Brito, Marcos Sampaio +1
We show in a diagrammatic and regularization independent analysis that the quadratic contribu- tion to the beta function which has been conjectured to render quantum electrodynamic…