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arXiv · hep-lat/0209089

Topological Charge Correlators, Spectral Bounds, and Contact Terms

H. Thacker·S. J. Dong·T. Draper·I. Horvath·F. X. Lee·K. -F. Liu·J. B. Zhang
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Abstract

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.

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H. Thacker, S. J. Dong, T. Draper, I. Horvath, F. X. Lee, K. -F. Liu, J. B. Zhang. 2002-09-06. Topological Charge Correlators, Spectral Bounds, and Contact Terms. https://doi.org/10.1016/s0920-5632(03)01665-7

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