Thompson's Method applied to Quantum Electrodynamics (QED)

Details Thompson's Method applied to Quantum Electrodynamics (QED) Thompson's Method applied to Quantum Electrodynamics (QED)

2000-04-27

arxiv.org/abs/hep-th/0004197v1

Physics

High Energy Physics

High Energy Physics - Theory

16 pages, no figures

Scientific paper

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 $\mu$.

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