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Complex numbers have a wide variety of application in physics and so must be contour integration but where do we exactly apply the principles of contour integration, residues and poles in the field of physics?

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  • $\begingroup$ landau damping is a good example $\endgroup$ – Saavestro Jun 29 '17 at 5:15
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    $\begingroup$ This is a big-list question, and the policy about big-list questions is that they will get closed. $\endgroup$ – Ali Jun 29 '17 at 6:37
  • $\begingroup$ You may encounter real integrals with limits of integration that are infinite. You can use residues from the Cauchy residue theorem to solve these integrals under certain conditions. $\endgroup$ – Noon36 Jun 29 '17 at 8:40
  • $\begingroup$ @Ali I need few examples from your big list. $\endgroup$ – Ananyo Bhattacharya Jun 29 '17 at 13:52