Relativistic Friedrichs–Lee model and quark-pair creation model
Relativistic Friedrichs–Lee model and quark-pair creation model
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DOI：
10.1140/epjc/s10052-020-08752-8
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发表时间：
2020-08
期刊：
影响因子：
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通讯作者：
Zhi-Yong Zhou;Zhiguang Xiao
中科院分区：
文献类型：
--
作者：
Zhi-Yong Zhou;Zhiguang Xiao
In this paper, we present how the Friedrichs–Lee model could be extended to the relativistic scenario and be combined with the relativistic quark pair creation model in a consistent way. This scheme could be applied to study the “unquenched” effect of the meson spectra. As an example, if the lowestbound state in the potential model is coupled to thecontinuum, two resonance poles could be found from the scattering amplitude for the continuum states. One of them could correspond to theand the other probably. This scheme might shed more light on why extra states could appear in the hadron spectrum other than the prediction of the quark potential model.
