What Do the Commutators in Peskin and Schroeder's Equation (2.30) Represent?

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The discussion centers on the interpretation of the two commutators in Peskin and Schroeder's Equation (2.30), which are believed to represent Dirac delta functions. Participants clarify that the first commutator corresponds to -δ(p' + p) and the second to δ(p + p'). After simplification, the negative sign and factor of 2 cancel out in Equation (2.30). The integral involving the delta function is utilized to derive the final result. Understanding these commutators is crucial for grasping the underlying physics in the context of quantum field theory.
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Can someone tell me what the two commutators in (2.30) stand for? It has to be Dirac delta functions, but which one exactly?

thank you
 
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Acording to (2.29) the first one should be - \delta(p' + p) and the second \delta(p + p'). After substracting both the negative sign as well as the factor 2 cancel in (2.30). I guess you should then make use of:

\int \delta(p + p^{\prime}) F(p^{\prime}) dp^{\prime} = F(- p)

to obtain the final result in (2.30).
 
Thanks hellfire
 

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