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

  • On the 70th Anniversary of Yurii Antonovich Simonov
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Abstract

Implications stemming from the inclusion of nonperturbative confining effects, as contained in the stochastic vacuum model of H. Dosch and Yu.A. Simonov, are considered in the context of a (hypothetical) quark-quark “scattering process” in the Regge kinematical region. In a computation wherein the nonperturbative input enters as a correction to established perturbative results, a careful treatment of infrared divergences 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 a contribution from a tachyonic ghost state, an occurrence which is fully consistent with earlier suggestions made in the context of low-energy QCD phenomenology.

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Authors and Affiliations

  1. Physics Department Nuclear & Particle Physics Section, University of Athens, Panepistimiopolis, Athens, Greece

    A. I. Karanikas & C. N. Ktorides

Authors
  1. A. I. Karanikas
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  2. C. N. Ktorides
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Additional information

From Yadernaya Fizika, Vol. 68, No. 5, 2005, pp. 894–903.

Original English Text Copyright © 2005 by Karanikas, Ktorides.

This article was submitted by the authors in English.

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Karanikas, A.I., Ktorides, C.N. Theoretical evidence for a tachyonic ghost-state contribution to the gluon propagator in high-energy, forward quark-quark “scattering”. Phys. Atom. Nuclei 68, 861–869 (2005). https://doi.org/10.1134/1.1935018

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  • DOI: https://doi.org/10.1134/1.1935018

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