Can two or more gauge bosons propagate in the light-front?
A. T. Suzuki, J. H. O. Sales
Abstract
Gauge fields in the light-front are usually fixed via the nA=0 condition yielding the non-local singularities of the type (kn)(-a)=0 and a=1,2,.. in the gauge boson propagator which must be addressed conveniently. In calculating this propagator for n noncovariant gauge bosons those non-local terms demand the use of a prescription to ensure causality. We show that from 2 gauge bosons onward the implementation of such a prescription does not remove certain pathologies such as the non existence of two or more free propagating gauge bosons in the light-front form.
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