Thompson's Method applied to Quantum Electrodynamics (QED)
Abstract
In this work we apply Thompson's method (of the dimensions) to study the quantum electrodynamics (QED). This method can be considered as a simple and alternative way to the renormalisation group (R.G) approach and when applied to QED lagrangian is able to obtain the running coupling constant behavior $\alpha (\mu)$, namely the dependence of $\alpha$ on the energy scale. We also obtain the dependence of the mass on the energy scale. The calculations are evaluated just at $d_c=4$, where $d_c$ is the upper critical dimension of the problem, so that we obtain logarithmic behavior both for the coupling $\alpha$ and the mass $m$ on the energy scale $\mu$.
 Publication:

arXiv eprints
 Pub Date:
 April 2000
 arXiv:
 arXiv:hepth/0004197
 Bibcode:
 2000hep.th....4197N
 Keywords:

 High Energy Physics  Theory
 EPrint:
 16 pages, no figures