Development of Bethe-Salpeter theory for dealing with unstable system
文献类型：期刊论文
| 作者 | Chen, Xiaozhao; Lu, Xiaofu1,2,3 |
| 刊名 | EUROPEAN PHYSICAL JOURNAL C
 |
| 出版日期 | 2023 |
| 卷号 | 83期号:6页码:499 |
| ISSN号 | 1434-6044 |
| 关键词 | MASS |
| DOI | 10.1140/epjc/s10052-023-11682-w |
| 英文摘要 | In the framework of relativistic quantum field theory, the solution of homogeneous Bethe-Salpeter equation for two-body bound state can not describe unstable system, so we develop Bethe-Salpeter theory to investigate resonance which is regarded as an unstable two-body system. Based on Bethe-Salpeter wave function, we consider the time evolution of two-body bound state determined by the total Hamiltonian. The total matrix element for arbitrary decay channel is expressed in terms of the Heisenberg picture, and Mandelstam's approach is generalized to calculate the matrix element between bound states with respect to arbitrary value of the final state energy. Some innovations to Feynman diagram are made so that the key features of dispersion relation can be more clearly exhibited. This new resonance theory in quantum field theory is applied to investigate exotic particle which is considered as an unstable meson-meson molecular state. |
| 学科主题 | Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/27961]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 作者单位 | 1.Shandong Univ Sci & Technol, Dept Fundamental Courses, Tai An 271019, Peoples R China 2.Sichuan Univ, Dept Phys, Chengdu 610064, Peoples R China 3.Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China 4.CCAST World Lab, POB 8730, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Xiaozhao,Lu, Xiaofu. Development of Bethe-Salpeter theory for dealing with unstable system[J]. EUROPEAN PHYSICAL JOURNAL C,2023,83(6):499. |
| APA | Chen, Xiaozhao,&Lu, Xiaofu.(2023).Development of Bethe-Salpeter theory for dealing with unstable system.EUROPEAN PHYSICAL JOURNAL C,83(6),499. |
| MLA | Chen, Xiaozhao,et al."Development of Bethe-Salpeter theory for dealing with unstable system".EUROPEAN PHYSICAL JOURNAL C 83.6(2023):499. |
入库方式： OAI收割
来源：理论物理研究所
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