Instanton Effects on the Role of the Low-Energy Theorem for the Scalar Gluonic Correlation Function
نویسنده
چکیده
Instanton contributions to the Laplace sum-rules for correlation functions of scalar gluonic currents are calculated. It is demonstrated that the instanton contributions consist of an instanton continuum that contributes to all sum-rules and a (scale-independent) portion which makes a unique contribution to the sum-rule containing the low-energy theorem. These instanton contributions are found to diminish the role of the low-energy theorem in the sum-rules, significantly increasing the resulting mass bounds for the ground state of scalar gluonium.
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تاریخ انتشار 2008