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Electron mass radiative corrections 
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#1
Apr1514, 03:10 PM

P: 48

Hi all,
I'd like to know how the chiral symmetry protect the electron mass in the oneloop 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
Apr1614, 10:09 AM

P: 1,020

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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