Theoretical evidence for a tachyonic ghost state contribution to the gluon propagator in high energy, forward quark-quark `scattering'

A. I. Karanikas; C. N. Ktorides

doi:10.1134/1.1935018

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Theoretical evidence for a tachyonic ghost state contribution to the gluon propagator in high energy, forward quark-quark `scattering'

A. I. Karanikas·C. N. Ktorides

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Abstract

Implications stemming from the inclusion of non-perturbative, confinining effects, as contained in the Stochastic Vacuum Model of Dosch and Simonov, are considered in the context of a, hypothetical, quark-quark `scattering process' in the Regge kinematical region. In a computation wherein the non-perturbative input enters as a correction to established perturbative results, a careful treatment of infrared divergencies is shown to imply the presence of an effective propagator associated with the existence of a linear term in the static potential. An equivalent statement is to say that the modified gluonic propagator receives contribution from a tachyonic ghost state, an occurence which is fully consistent with earlier such suggestions made in the context of low energy QCD phenomenology.

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A. I. Karanikas, C. N. Ktorides. 2004-05-10. Theoretical evidence for a tachyonic ghost state contribution to the gluon propagator in high energy, forward quark-quark `scattering'. https://doi.org/10.1134/1.1935018

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