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m Reverted 1 edit by 148.88.244.238 (talk) to last revision by Ira Leviton (TW) |
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The one-loop beta function in [[quantum electrodynamics]] (QED) is
*<math>\beta(e)=\frac{e^
or, equivalently,
*<math>\beta(\alpha)=\frac{2\alpha^{2}}{3\pi}~,</math>
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