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Does path integral and loop integral in a Feynman diagram violate special relativity?
Consider a correlation function between two points $A(x_1,t_1)$ and $B(x_2,t_2)$, we need to integrate over paths which could be infinite long. But the time length $(t_1-t_2)$ is finite, so if $A$ ...
Feb 11 '12 at 9:27
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