Complexified quasinormal modes and the pole-skipping in a holographic system at finite chemical potential
文献类型：期刊论文
| 作者 | Abbasi, Navid2; Tahery, Sara1 |
| 刊名 | JOURNAL OF HIGH ENERGY PHYSICS
 |
| 出版日期 | 2020 |
| 卷号 | 2020期号:10页码:52 |
| 关键词 | Gauge-gravity correspondence AdS-CFT Correspondence |
| ISSN号 | 1029-8479 |
| DOI | 10.1007/JHEP10(2020)076 |
| 其他题名 | Complexified quasinormal modes and the pole-skipping in a holographic system at finite chemical potential |
| 通讯作者 | Abbasi, Navid(abbasi@lzu.edu.cn) |
| 英文摘要 | We develop a method to study coupled dynamics of gauge-invariant variables, constructed out of metric and gauge field fluctuations on the background of a AdS(5) Reissner-Nordstrom black brane. Using this method, we compute the numerical spectrum of quasinormal modes associated with fluctuations of spin 0, 1 and 2, non-perturbatively in mu /T . We also analytically compute the spectrum of hydrodynamic excitations in the small chemical potential limit. Then, by studying the spectral curve at complex momenta in every spin channel, we numerically find points at which hydrodynamic and non-hydrodynamic poles collide. We discuss the relation between such collision points and the convergence radius of the hydrodynamic derivative expansion. Specifically in the spin 0 channel, we find that within the range 1.1 mu /T 2, the radius of convergence of the hydrodynamic sound mode is set by the absolute value of the complex momentum corresponding to the point at which the sound pole collides with the hydrodynamic diffusion pole. It shows that in holographic systems at finite chemical potential, the convergence of the hydrodynamic derivative expansion in the mentioned range is fully controlled by hydrodynamic informa- tion. As the last result, we explicitly show that the relevant information about quantum chaos in our system can be extracted from the pole-skipping points of energy density re- sponse function. We find a threshold value for mu /T , lower than which the pole-skipping points can be computed perturbatively in a derivative expansion. |
| WOS关键词 | TRANSPORT-COEFFICIENTS ; BLACK-HOLES ; HYDRODYNAMICS ; DEPENDENCE ; VISCOSITY |
| 资助项目 | [National Natural Science Foundation of China] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000583384300002 |
| 出版者 | SPRINGER |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://119.78.100.186/handle/113462/136968]  |
| 专题 | 中国科学院近代物理研究所 |
| 作者单位 | 1.Institute of Modern Physics, Chinese Academy of Sciences 2.兰州大学 |
| 推荐引用方式 GB/T 7714 | Abbasi, Navid,Tahery, Sara. Complexified quasinormal modes and the pole-skipping in a holographic system at finite chemical potential[J]. JOURNAL OF HIGH ENERGY PHYSICS,2020,2020(10):52. |
| APA | Abbasi, Navid,&Tahery, Sara.(2020).Complexified quasinormal modes and the pole-skipping in a holographic system at finite chemical potential.JOURNAL OF HIGH ENERGY PHYSICS,2020(10),52. |
| MLA | Abbasi, Navid,et al."Complexified quasinormal modes and the pole-skipping in a holographic system at finite chemical potential".JOURNAL OF HIGH ENERGY PHYSICS 2020.10(2020):52. |
入库方式： OAI收割
来源：近代物理研究所
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