New Determination of the Fine Structure Constant from the ElectrongValue and QED

2006/07/17 by G. Gabrielse, David Hanneke, T. Kinoshita +2 · 5 citations
Physics and Astronomy · Computer Science · #Atomic and Subatomic Physics Research #Atomic and Molecular Physics #Quantum Information and Cryptography

paper · doi:10.1103/physrevlett.97.030802

openalex publication_date 2006/07/17 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30

Abstract

Quantum electrodynamics (QED) predicts a relationship between the dimensionless magnetic moment of the electron (g) and the fine structure constant (alpha). A new measurement of g using a one-electron quantum cyclotron, together with a QED calculation involving 891 eighth-order Feynman diagrams, determine alpha(-1)=137.035 999 710 (96) [0.70 ppb]. The uncertainties are 10 times smaller than those of nearest rival methods that include atom-recoil measurements. Comparisons of measured and calculated g test QED most stringently, and set a limit on internal electron structure.

Citations

• New Measurement of the Electron Magnetic Moment Using a One-Electron Quantum Cyclotron
• On Quantum-Electrodynamics and the Magnetic Moment of the Electron
• CODATA recommended values of the fundamental physical constants: 2002

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• Improved predictions for g−2 of the muon and αQED(MZ2)
• Relativistic and quantum electrodynamic effects in superheavy elements
• Tenth-Order QED Contribution to the Electrong−2and an Improved Value of the Fine Structure Constant
• The Physics behind Chemistry and the Periodic Table
• Electron [wikipedia]