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

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

DOI Full Paper Access

44

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0

References

1997

Year

Kenichi Aoki, K. Morikawa, J.-I. Sumi, H. Terao, M. Tomoyose

Progress of Theoretical Physics

EngineeringPhysicsChiral Critical BehaviorChiral Phase StructureParticle PhysicsQuantum Field TheoryNatural SciencesNon-perturbative QcdCutoff Scheme DependenceCondensed Matter TheoryQuantum Chromodynamics

Abstract

We study the chiral critical behavior of QED 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 φφ, which is enhanced compared to the ladder approximation. We find that the cutoff scheme dependence of the physical results is very small.