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Podolsky propagator in the gap and bound-state equations
2021
Physical Review D
Based on the generalized quantum electrodynamics expression for the Podolsky propagator, which preserves gauge invariance for massive photons, we propose a model for the massive gluon propagator that reproduces well-known features of established strong-interaction models in the framework of the Dyson-Schwinger equation. By adjusting the Podolsky mass and the coupling strength we thus construct a model with simple analytical properties known from perturbative theory, yet well suited to describe
doi:10.1103/physrevd.103.076008
fatcat:7o2yt4avdzculf4cv5jxlvhtda