Electron mass radiative corrections

In summary, the chiral symmetry protects the electron mass in one-loop calculations by preventing it from becoming massless. This symmetry also explains why the mass radiative corrections have a logarithmic divergence, with the cutoff being represented by ##\Lambda##.
  • #1
Safinaz
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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
 
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  • #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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What is the concept of electron mass radiative corrections?

Electron mass radiative corrections refer to the effect of virtual particles on the measured mass of an electron. These virtual particles constantly interact with the electron, causing fluctuations in its mass that need to be accounted for in calculations.

Why are electron mass radiative corrections important?

Electron mass radiative corrections are important because they play a crucial role in precision measurements of physical quantities such as the electron's mass and magnetic moment. Failure to account for these corrections can lead to significant errors in experimental results.

How are electron mass radiative corrections calculated?

Electron mass radiative corrections are calculated using theoretical models and quantum field theory calculations. These calculations involve complex mathematical equations and require advanced computational techniques.

What factors can affect the magnitude of electron mass radiative corrections?

The magnitude of electron mass radiative corrections can be affected by several factors, including the type of interaction between the electron and virtual particles, the energy scale of the interaction, and the precision of the experimental measurements.

How do electron mass radiative corrections impact our understanding of fundamental physics?

Electron mass radiative corrections provide insights into the fundamental nature of particles and their interactions. By accurately measuring and understanding these corrections, we can improve our understanding of the underlying theories and principles of physics.

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