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- W4384648184 abstract "The renormalization group equations of massive $mathcal{N}=1$ supersymmetric quantum electrodynamics (SQED) are studied, using the functional renormalization group approach. Applying a supercovariant derivative expansion of the fields, we compute the non-perturbative beta function. In the local potential approximation, we verify the exact NSVZ $beta$ function for the non-massive SQED limit, and we find a NSVZ relation for an effective fine-structure constant when the superpotential is considered. Furthermore, we improve the calculation of the beta function by incorporating the influence of momentum modes on the propagation of the chiral and vector superfields in the non-perturbative running of the electric charge, applying a second-order truncation for the derivative expansion, which we use to find the momentum contributions to the $beta$ function. Again, we find a NSVZ relation for an effective fine-structure constant." @default.
- W4384648184 created "2023-07-19" @default.
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- W4384648184 date "2023-07-17" @default.
- W4384648184 modified "2023-10-10" @default.
- W4384648184 title "Non-perturbative SQED beta function using functional renormalization group approach and the NSVZ exact beta function" @default.
- W4384648184 doi "https://doi.org/10.48550/arxiv.2307.08488" @default.
- W4384648184 hasPublicationYear "2023" @default.
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