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
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.