Yang-Mills theory on the mass shell

Journal Article · Mon Dec 06 04:00:00 EST 1976 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.37.1528· OSTI ID:7337922

Cvitanovic, P

Gauge-invariant mass-shell amplitudes for quantum electrodynamics (QED) and Yang-Mills theory are defined by dimensional regularization. Gauge invariance of the mass-shell renormalization constants is maintained through interplay of ultraviolet and infrared divergences. Quark renormalizations obey the same simple Ward identity as do the electron renormalizations in QED, while the gluon contributions to gluon renormalizations are identically zero. The simplest amplitude finite in QED, the magnetic moment, is gauge-invariant but divergent in Yang-Mills theory for both external gluon and external photon. (AIP)

• Research Organization: Institute for Advanced Study, Princeton, New Jersey 08540
• OSTI ID: 7337922
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 37:23; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

645400* -- High Energy Physics-- Field Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
ELECTRODYNAMICS
ELEMENTARY PARTICLES
FIELD THEORIES
GAUGE INVARIANCE
INFRARED DIVERGENCES
INVARIANCE PRINCIPLES
MAGNETIC MOMENTS
POSTULATED PARTICLES
QUANTUM ELECTRODYNAMICS
QUANTUM FIELD THEORY
QUARKS
RENORMALIZATION
ULTRAVIOLET DIVERGENCES
WARD IDENTITY
YANG-MILLS THEORY