- #1

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However, if you add 137 vertices, wouldn't that result in a constant of 1? And as you add more and more, you'll get higher values of the fine structure constant. Or do you multiply them so it gets smaller in QED, but larger in QCD.

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- Thread starter Phys12
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- #1

- 353

- 41

However, if you add 137 vertices, wouldn't that result in a constant of 1? And as you add more and more, you'll get higher values of the fine structure constant. Or do you multiply them so it gets smaller in QED, but larger in QCD.

- #2

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If you are computing the amplitude for a Feynman diagram with multiple vertices, the constants for each vertex are multiplied.Or do you multiply them

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