Effective Lagrangian for scale-invariant quantum electrodynamics

Journal Article · Mon Jun 15 00:00:00 EDT 1992 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.45.4672· OSTI ID:7184040

Bardeen, W A ^[1]; Love, S T ^[2]

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1. Fermilab MS 106, P.O. Box 500, Batavia, Illinois 60510 (United States)
2. Department of Physics, Purdue University, West Lafayette, Indiana 47907-1396 (United States)

In the critical scaling region of quenched, planar QED a composite scalar state plays an essential role in the effective dynamics. We construct an effective potential describing the dynamics of this state for both weak and strong gauge coupling. The scalar propagator at the strong-coupling end point is also constructed using dispersion relation techniques. The role of the four-fermion interaction in the critical region is emphasized and the fate of the scale symmetry elucidated.

• DOE Contract Number: AC02-76ER01428
• OSTI ID: 7184040
• Journal Information: Physical Review, D (Particles Fields); (United States), Vol. 45:12; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
QUANTUM ELECTRODYNAMICS
SCALAR FIELDS
BOUNDARY CONDITIONS
CHIRAL SYMMETRY
COUPLING CONSTANTS
DISPERSION RELATIONS
FERMIONS
GAUGE INVARIANCE
LADDER APPROXIMATION
LAGRANGIAN FIELD THEORY
PROPAGATOR
SCHWINGER FUNCTIONAL EQUATIONS
SYMMETRY BREAKING
U-1 GROUPS
DIFFERENTIAL EQUATIONS
ELECTRODYNAMICS
EQUATIONS
FIELD THEORIES
INVARIANCE PRINCIPLES
LIE GROUPS
QUANTUM FIELD THEORY
SYMMETRY
SYMMETRY GROUPS
U GROUPS
662220* - Quantum Electrodynamics- (1992-)
662120 - General Theory of Particles & Fields- Symmetry
Conservation Laws
Currents & Their Properties- (1992-)