Gauge Invariant Quark Propagator in the Instanton Background

Details Gauge Invariant Quark Propagator in the Instanton Background Gauge Invariant Quark Propagator in the Instanton Background

1995-02-21

arxiv.org/abs/hep-ph/9502361v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 latex pages, 1 figure, macros: epsf.sty

Scientific paper

After a general discussion on the choice of gauge, we compare the quark propagator in the background of one instanton in regular and singular gauge with a gauge invariant propagator obtained by inserting a path-ordered gluon exponential. Using a gauge motivated by this analysis, we were able to obtain a finite result for the quark condensate without introducing an infrared cutoff nor invoking some instanton model.

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