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arXiv · 2510.20488

On the Resonance Coupling and Width in Quantum Field Theory

Dmitri Melikhov
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Abstract

In quantum field theory, characteristics of resonances are related to self-energy diagrams, which are ultra-violet divergent and require renormalization. We demonstrate the proper way to define the resonance coupling $g_M$ such that the resonance properties calculated in quantum field theory are finite and scheme-independent quantities.

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Dmitri Melikhov. 2025-10-23. On the Resonance Coupling and Width in Quantum Field Theory. https://arxiv.org/abs/2510.20488

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