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arXiv · hep-ph/9612459

Non-Perturbative Renormalization Group Analysis of the Chiral Critical Behaviors in QED

Ken-Ichi Aoki·Keiichi Morikawa·Jun-Ichi Sumi·Haruhiko Terao·Masashi Tomoyose
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Abstract

We study the chiral critical behaviors of QED by using Non-Perturbative Renormalization Group (NPRG). Taking account of the non-ladder contributions, our flow equations are free from the gauge parameter ($α$) dependence. We clarify the chiral phase structure, and calculate the anomalous dimension of $\barψψ$, which is enhanced compared to the ladder approximation. We find that the cutoff scheme dependence of the physical results is very small.

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Ken-Ichi Aoki, Keiichi Morikawa, Jun-Ichi Sumi, Haruhiko Terao, Masashi Tomoyose. 1997-01-29. Non-Perturbative Renormalization Group Analysis of the Chiral Critical Behaviors in QED. https://doi.org/10.1143/ptp.97.479

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