Recent content by nguoithamdo

  1. N

    Finding "R. Gastmans, Ubiquitous Photon: Helicity Method for QED and QCD"

    thank you for your helping thank you very much for your instruction but i don't have money:frown:
  2. N

    Finding "R. Gastmans, Ubiquitous Photon: Helicity Method for QED and QCD"

    thanks for your advice
  3. N

    Finding "R. Gastmans, Ubiquitous Photon: Helicity Method for QED and QCD"

    i am encoutering a problem i use helicity method to caculate six photon amplitude in scalar QED but i don't know explicit form of wave fuction QED . And i need a book with title " R. Gastmans, Ubiquitous photon: Helicity method for QED and QCD" where can i find it? thank you
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