Topological Charge Correlators, Spectral Bounds, and Contact Terms

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The structure of topological charge fluctuations in the QCD vacuum is strongly restricted by the spectral negativity of the Euclidean 2-point correlator for $x\neq 0$ and the presence of a positive contact term. Some examples are considered which illustrate the physical origin of these properties.
Lattice 2002 Conference Proceedings

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High Energy Physics - Lattice

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http://salesiana.dossiersoluciones.com/handle/123456789/197049

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/hep-lat/0209089
 http://arxiv.org/abs/hep-lat/0209089
 Nucl.Phys.Proc.Suppl.119:685-687,2003
 doi:10.1016/S0920-5632(03)01665-7

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