M L Walker 2004 J. Phys. G: Nucl. Part. Phys. 30 1219 doi:10.1088/0954-3899/30/9/019
M L Walker
Show affiliationsWe study the SUSY breaking of the covariant gauge-fixing term in SUSY QED and consider its correspondence to a breaking of the Lorentz gauge condition by SUSY. Reasoning by analogy with SUSY's violation of the Wess-Zumino gauge, we argue that the SUSY transformation, already modified to preserve the Wess–Zumino gauge, should be further modified by another gauge transformation which restores the Lorentz gauge condition. We derive this modification and use the resulting transformation to derive a Ward identity relating the photon and photino propagators without using ghost fields. Our transformation also fulfils the SUSY algebra, modulo terms that vanish in the Lorentz gauge. We finish with a discussion of how to circumvent our transform's non-local, non-linear nature when deriving higher-order Green's function Ward identities.
11.15.Ex Spontaneous breaking of gauge symmetries
11.30.Qc Spontaneous and radiative symmetry breaking
Issue 9 (September 2004)
Received 18 March 2004
Published 2 August 2004
M L Walker 2004 J. Phys. G: Nucl. Part. Phys. 30 1219
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