Gauge independent chiral symmetry breaking in quenched QED - INSPIRE

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Gauge independent chiral symmetry breaking in quenched QED

A. Bashir
(
- Durham U.
)
,
M.R. Pennington
(
- Durham U.
)

Jun, 1994

22 pages

Published in:

Phys.Rev.D 50 (1994) 7679-7689

e-Print:

hep-ph/9407350 [hep-ph]

DOI:

10.1103/PhysRevD.50.7679

Report number:

DTP-94-48

View in:

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Abstract:

In quenched QED we construct a non-perturbative fermion-boson vertex that ensures the fermion propagator satisfies the Ward-Takahashi identity, is multiplicatively renormalizable, agrees with perturbation theory for weak couplings and has a critical coupling for dynamical mass generation that is strictly gauge independent. This is in marked contrast to the rainbow approximation in which the critical coupling changes by 50% just between the Landau and Feynman gauges. The use of such a vertex should lead to a more believable study of mass generation.

quantum electrodynamics
fermion: propagator
Ward identity
Dyson-Schwinger equation: solution
approximation: quenching
symmetry breaking: chiral
mass generation

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Figures(0)

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