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The dimensionless electromagnetic coupling in SI conventions, whose renormalized value runs with energy.
wp-physics-fine_structure_constantnlab-fine-structure-constantnist-codatapdg-rppEach relation below ends at this concept.
No direct relations are authored in this direction.
Each relation below starts at this concept.
This is an authored directed relation from the source endpoint to the target endpoint.
The anomaly measurement and QED series provide a leading determination and consistency test of .
The source theory, law, entity, prediction, or structural claim is directly tested, supported, constrained, or established by the target experiment or observation. Experimental support is not final logical proof; the edge detail states exactly what was measured.
wp-physics-electron_g_minus_2_measurementsnist-codata-2022This is an authored directed relation from the source endpoint to the target endpoint.
The fine-structure constant is the low-energy dimensionless coupling controlling QED perturbation theory.
The source supplies a substantive formal ingredient, dynamical sector, law, field content, or mechanism of the target theoretical framework.
wp-physics-fine_structure_constantnist-codatapdg-rppwp-physics-quantum_electrodynamicsnlab-physics-quantum_electrodynamicstong-qftnobel-qed