2000/10/11 by Y. M. Cho, Cho, Y. M., D. G. Pak +1
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Quantum Chromodynamics and Particle Interactions #hep-th
paper · pdf · doi:10.48550/arxiv.hep-th/0010073
4 pages, 5 figures
arxiv created 2001/09/05 · arxiv updated 2009/11/30
We present a new estimate of the fine structure constant and the β-function of QED at an arbitrary scale. Using the non-perturbative but convergent series expression of the one loop effective action of QED that has been available recently we make a non-perturbative estimate of the running coupling and the β-function, and prove the renormalization group invariance of the effective action. The contrast between our result and the perturbative result is remarkable.