Real-time dynamics of the O(4) scalar theory within the fRG approach
文献类型：期刊论文
| 作者 | Tan, Yang-yang; Chen, Yong-rui; Fu, Wei-jie |
| 刊名 | SCIPOST PHYSICS
 |
| 出版日期 | 2022 |
| 卷号 | 12期号:1页码:26 |
| 关键词 | PHASE-DIAGRAM RENORMALIZATION QCD EQUILIBRIUM EQUATION |
| ISSN号 | 2542-4653 |
| DOI | 10.21468/SciPostPhys.12.1.026 |
| 英文摘要 | In this paper, the real-time dynamics of the O (4) scalar theory is studied within the functional renormalization group formulated on the Schwinger-Keldysh closed time path. The flow equations for the effective action and its n-point correlation functions are derived in terms of the classical and quantum fields, and a concise diagrammatic representation is presented. An analytic expression for the flow of the four-point vertex is obtained. Spectral functions with different values of temperature and momentum are obtained. Moreover, we calculate the dynamical critical exponent for the phase transition near the critical temperature in the O (4) scalar theory in 3 + 1 dimensions, and the value is found to be z similar or equal to 2.023. |
| 学科主题 | Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/27841]  |
| 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.[Tan, Yang-yang 2.Chen, Yong-rui 3.Dalian Univ Technol, Sch Phys, Dalian 116024, Peoples R China 4.Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tan, Yang-yang,Chen, Yong-rui,Fu, Wei-jie. Real-time dynamics of the O(4) scalar theory within the fRG approach[J]. SCIPOST PHYSICS,2022,12(1):26. |
| APA | Tan, Yang-yang,Chen, Yong-rui,&Fu, Wei-jie.(2022).Real-time dynamics of the O(4) scalar theory within the fRG approach.SCIPOST PHYSICS,12(1),26. |
| MLA | Tan, Yang-yang,et al."Real-time dynamics of the O(4) scalar theory within the fRG approach".SCIPOST PHYSICS 12.1(2022):26. |
入库方式： OAI收割
来源：理论物理研究所
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