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Squeezed gluon vacuum and the global colour model of QCD

A. A. Natale
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Abstract

We discuss how the vacuum model of Celenza and Shakin with a squeezed gluon condensate can explain the existence of an infrared singular gluon propagator frequently used in calculations within the global colour model. In particular, it reproduces a recently proposed QCD-motivated model where low energy chiral parameters were computed as a function of a dynamically generated gluon mass. We show how the strength of the confining interaction of this gluon propagator and the value of the physical gluon condensate may be connected.

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A. A. Natale. 1999-09-13. Squeezed gluon vacuum and the global colour model of QCD. https://doi.org/10.1142/s021773239900211x

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