期刊
EUROPEAN PHYSICAL JOURNAL A
卷 52, 期 11, 页码 -出版社
SPRINGER
DOI: 10.1140/epja/i2016-16330-8
关键词
-
资金
- DFG
- NSFC [11261130311]
- Russian Science Foundation [15-12-30014]
- Russian Science Foundation [15-12-30014] Funding Source: Russian Science Foundation
We investigate the effect of meson loops on the spectrum of quark states. We demonstrate that in general quark states do not tend to get very broad if their coupling to the continuum increases, but instead they decouple from the latter in the large coupling limit. We ascribe this effect to the essentially nonperturbative unitarization procedure involved. In the meantime, some quark resonances behave very differently and demonstrate collectivity in the sense that their pole trajectories span a wide, as compared to the level spacing, region therefore acquiring contributions from multiple bare poles rather than from the closest neighbors. While the actual calculations are done within particular, very simplified models, it is argued that the findings might well be general.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据