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

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

1996-12-24

arxiv.org/abs/hep-ph/9612459v2

Prog.Theor.Phys. 97 (1997) 479-490

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, latex, 7 figures; misprints corrected

Scientific paper

10.1143/PTP.97.479

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 ($\alpha$) dependence. We clarify the chiral phase structure, and calculate the anomalous dimension of $\bar\psi\psi$, 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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