The four-loop $$\beta $$ β -function from vacuum supergraphs and the NSVZ relation for $${{{\mathcal {N}}}}=1$$ N = 1 SQED regularized by higher derivatives
Abstract In $${{{\mathcal {N}}}}=1$$ N = 1 SQED with $$N_f$$ N f flavors regularized by higher derivatives we obtain the four-loop beta function using a method based on calculating vacuum supergraphs. For this purpose we use a special C++ program which obtain contributions to the $$\beta $$ β -funct...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2024-03-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-024-12587-y |