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Electron mass radiative corrections

  1. Apr 15, 2014 #1
    Hi all,

    I'd like to know how the chiral symmetry protect the electron mass in the one-loop calculation of the electron self energy
    and we finally get the mass radiative corrections as a logarithmic divergence.

    It's known that the Dirac particle mass term : ## m \bar{\psi} \psi## could be written as ## m (\bar{\psi}_L \psi_R + \bar{\psi}_R \psi_L ) ##, so is there a simple explanation why the chiral symmetry keeps ## \Delta m \sim ln \Lambda \sim m ##, where ##\Lambda## the cutoff.

    Bests,
    Safinaz
     
  2. jcsd
  3. Apr 16, 2014 #2
    Chiral symmetry just protects the electron from getting mass, if it started massless. It has nothing to do with the fact that loop correction to electron diverges logarithmically.
     
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