Critical Behavior in Quenched {QED} to All Orders in the Coupling

Mahanta, U.

doi:10.1016/0370-2693(89)91032-0

Critical Behavior in Quenched {QED} to All Orders in the Coupling

U. Mahanta
(
- Boston U.
)

1989

5 pages

Published in:

Phys.Lett.B 225 (1989) 181-185

Published: 1989

DOI:

10.1016/0370-2693(89)91032-0

View in:

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Abstract: (Elsevier)

We determine the cutoff dependence of the gauge coupling α to all orders in perturbation theory for a quenched QED scenario by stability analysis of the CJT effective potential. We then derive the expression for the beta function of the system in the supercritical phase. The model seems to possess a nontrivial continuum limit in the language of renormalization group flow. We also determine the dynamical mass function in the supercritical phase to all orders in α.

QUANTUM ELECTRODYNAMICS: CRITICAL PHENOMENA
APPROXIMATION: QUENCHING
APPROXIMATION: EFFECTIVE POTENTIAL
FERMION: MASS
MASS: FERMION
PERTURBATION THEORY
RENORMALIZATION: BETA FUNCTION

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