| 31. | This is actually good news to physicists, because proposed theories can accommodate changes in the fine structure constant over time.
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| 32. | To lowest order in the fine-structure constant, \ alpha, the QED result for the electrostatic potential of a point charge is:
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| 33. | I got particularly strange big red text errors replacing the math that should be on the page " Fine-structure constant ".
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| 34. | The Killing form and the Casimir invariant also have a particularly simple form, when written in terms of the structure constants.
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| 35. | The structure constants " f abc " are totally antisymmetric in all indices analogous to those of SU ( 2 ).
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| 36. | For the abelian case, all the structure constants f ^ { abc } are zero and so there is no coupling.
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| 37. | Geonium studies of electrons and positrons are one of the best tests of QED and yield precise determinations of the fine-structure constant.
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| 38. | Where the structure constant is the Levi-Civita symbol, Einstein summation notation is used, is the Kronecker delta, and is the identity matrix.
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| 39. | The most precise and specific tests of QED consist of measurements of the electromagnetic fine structure constant, ?, in various physical systems.
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| 40. | The structure constants play a role in Lie algebra representations, and in fact, give exactly the matrix elements of the adjoint representation.
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