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Probes of holographic thermalization in a simple model with momentum relaxation
Nuclear Physics B ( IF 2.8 ) Pub Date : 2020-05-07 , DOI: 10.1016/j.nuclphysb.2020.115043
Yong-Zhuang Li , Xiao-Mei Kuang

From the viewpoint of AdS/CFT correspondence, we investigate the holographic thermalization process in a four dimensional Einstein-Maxwell-axions gravity theory, which is considered as a simple bulk theory dual to a boundary theory with momentum relaxation. We probe the thermalization process using the equal time two-point functions and the entanglement entropy with the circle profile. We analyze the effects of momentum relaxation on the process in details and results show that the momentum relaxation gives longer thermalization time, which means it suppresses the holographic thermalization process. This matches the properties of the quasi-normal frequencies for the bulk fluctuations which the frequency violates from zero mode more profoundly for stronger momentum relaxation. We claim that is reasonable because the decay of the bulk fluctuations holographically describes the approach to thermal equilibrium in the dual theory.



中文翻译:

带有动量松弛的简单模型中的全息热化探针

从AdS / CFT对应关系的角度出发,我们研究了二维爱因斯坦-麦克斯韦-轴心引力理论中的全息热化过程,该理论被认为是简单的体积理论,是具有动量松弛的边界理论的对偶。我们使用等时两点函数和圆轮廓的纠缠熵来研究热化过程。我们详细分析了动量弛豫对过程的影响,结果表明,动量弛豫给出了更长的热化时间,这意味着它抑制了全息热化过程。对于较大的动量,这更符合准正弦频率的特性,该频率从零模态更明显地违反了整体波动,从而使动量更强。

更新日期:2020-05-07
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