Resurgence of the Renormalization Group Equation

Abstract

We show how the renormalons emerge from the renormalization group equation with a priori no reference to any Feynman diagrams. The proof is rather given by recasting the renormalization group equation as a resurgent equation studied in the mathematical literature, which describes a function with an infinite number of singularities in the positive axis of the Borel plane. Consistency requires a one-to-one correspondence between the existence of such kind of equation and the actual (generalized) Borel resummation of the renormalons through a one-parameter transseries. Our finding suggests how non-perturbative contributions can affect the running couplings. We also discuss these concepts within the context of gauge theories, making use of the large number of flavor expansion.

arXiv comment20 pages, final journal version

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• Semiclassical Trans-Series from the Perturbative Hopf-Algebraic Dyson-Schwinger Equations: ${\varphi }^3$ QFT in 6 Dimensions
• Resurgence of the QCD Adler function
• Non-Wilsonian ultraviolet completion via transseries
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• Renormalons in a scalar self interacting theory: thermal, thermomagnetic and thermoelectric corrections for all values of temperature
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• The QCD Adler function and the muon $g-2$ anomaly from renormalons
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• Connected Chord Diagrams and the Combinatorics of Asymptotic Expansions
• The small-$N$ series in the zero-dimensional $O(N)$ model: constructive expansions and transseries
• Minimal Proper-time in Quantum Field Theory
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• Quantum Field Theory on Multifractal Spacetime: Varying Dimension and Ultraviolet Completeness
• Uncovering Hidden Patterns: Approximate Resurgent Resummation from Truncated Series