The Scalar Glueball in the Instanton Vacuum
M.C. Tichy, P. Faccioli
TL;DR
This paper investigates how instantons, as non-perturbative vacuum fluctuations, contribute to the formation and mass of the lightest scalar glueball, aligning well with recent lattice QCD results.
Contribution
It demonstrates that instanton-induced short-range correlations can produce a scalar glueball with a mass consistent with lattice calculations.
Findings
Instantons contribute significantly to scalar glueball binding.
The resulting glueball mass agrees with lattice QCD results.
Instanton effects are sufficient to explain the scalar glueball properties.
Abstract
We study the contribution of instantons to the binding and the mass of the lightest scalar glueball, in gluondynamics. We show that the short-range correlations introduced by such non-perturbative vacuum fluctuations are sufficient to give raise to a scalar glueball bound-state, with mass in good agreement with the results of recent lattice calculations.
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Taxonomy
TopicsBlack Holes and Theoretical Physics