- #1
Breo
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Hello folks,
I've just started to read "An Introduction to Quantum Field Theory by Peskin and Schroeder" and at the end of 6th page I could read:
"... Since H_I should conserve angular momentum, the photon to which these particles couple must have the correct polarization vector to give it this same angular momentum: $$\epsilon^\mu = (0, 1, i, 0)$$ ..."
Why those components? I lack of knowledge about polarization and don't know were it comes and what it means.
Thank you in beforehand
I've just started to read "An Introduction to Quantum Field Theory by Peskin and Schroeder" and at the end of 6th page I could read:
"... Since H_I should conserve angular momentum, the photon to which these particles couple must have the correct polarization vector to give it this same angular momentum: $$\epsilon^\mu = (0, 1, i, 0)$$ ..."
Why those components? I lack of knowledge about polarization and don't know were it comes and what it means.
Thank you in beforehand