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arXiv · hep-ph/0310004

Pion susceptibility of the QCD vacuum from an effective quark-quark interaction

Hong-shi Zong·Shi Qi·Wei Chen·Wei-min Sun·En-guang Zhao
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Abstract

A modified method for calculating the pion vacuum susceptibility from an effective quark-quark interaction model is derived. Within this approach it is shown that the pion vacuum susceptibility is free of ultraviolet divergence and is much smaller than the previous estimations.

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Hong-shi Zong, Shi Qi, Wei Chen, Wei-min Sun, En-guang Zhao. 2003-10-01. Pion susceptibility of the QCD vacuum from an effective quark-quark interaction. https://doi.org/10.1016/j.physletb.2003.09.099

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