6.3: Electromagnetism

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Aug 9, 2024
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- 6.2: Gravity
- 6.4: Weak Nuclear Force

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Electro-magnetism, i.e., QED, has been discussed in some detail in the previous chapter. Look there for a discussion. The coupling constant for the theory is

$\alpha = \frac{e^2}{4\pi\epsilon_0 \hbar c} . \nonumber$

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