1 6 D ec 2 01 0 New determination of the fine structure constant and test of the quantum electrodynamics
نویسندگان
چکیده
We report a new measurement of the ratio h/mRb between the Planck constant and the mass of Rb atom. A new value of the fine structure constant is deduced, α = 137.035 999 037 (91) with a relative uncertainty of 6.6 × 10. Using this determination, we obtain a theoretical value of the electron anomaly ae = 0.001 159 652 181 13(84) which is in agreement with the experimental measurement of Gabrielse (ae = 0.001 159 652 180 73(28)). The comparison of these values provides the most stringent test of the QED. Moreover, the precision is large enough to verify for the first time the muonic and hadronic contributions to this anomaly.
منابع مشابه
New Determination of the Fine Structure Constant from the Electron g Value and QED
Quantum electrodynamics (QED) predicts a relationship between the dimensionless magnetic moment of the electron (g) and the fine structure constant ( ). A new measurement of g using a one-electron quantum cyclotron, together with a QED calculation involving 891 eighth-order Feynman diagrams, determine 1 137:035 999 710 96 0:70 ppb . The uncertainties are 10 times smaller than those of nearest r...
متن کاملAn Analysis of Circulation of Decentralized Digital Money in Quantum Electrodynamics Space: the Econphysics Approach
The study aimed at showing how to create and release cryptocurrency, based on which one can introduce a new generation of this money that can continue its life in the quantum computers space and study whether cryptocurrency could be controlled or the rules should be rewritten in line with new technology. Regarding this, we showed the evolution of money and its uses in economic relations. Accord...
متن کاملNew determination of the fine structure constant from the electron value and QED.
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 tho...
متن کاملState of the art in the determination of the fine structure constant: test of Quantum Electrodynamics and determination of h/mu
متن کامل
Search for Possible Variation of the Fine Structure Constant
Determination of the fine structure constant α and search for its possible variation are considered. We focus on a role of the fine structure constant in modern physics and discuss precision tests of quantum electrodynamics. Different methods of a search for possible variations of fundamental constants are compared and those related to optical measurements are considered in detail.
متن کامل