arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2102.03533hep-thcond-mat.othergr-qc
收藏

有限温度下的全息反常电流

Holographic Anomalous Current at a Finite Temperature

Jian-Guo Liu, Rong-Xin Miao

摘要:

外尔反常导致了边界时空中的新的反常电流。近年来,人们发现高温可以显著增强自由理论的反常电流,这使得实验测量变得更加容易。本文研究了有限温度下的全息反常电流。结果表明,在高于3维的情况下,高温仍能增强全息电流。然而,温度依赖性是完全不同的自由理论。这可能是由于全息CFT是强耦合的并且在全息模型中存在非零电阻的事实。值得注意的是,全息反常电流的温度依赖性在高温极限是普遍的,这与背景磁场的选择无关。

英文摘要:

Weyl anomaly leads to novel anomalous currents in a spacetime with boundaries. Recently it is found that the anomalous current can be significantly enhanced by the high temperature for free theories, which could make the experimental measurement easier. In this paper, we investigate holographic anomalous currents at a finite temperature. It is found that the holographic current is still enhanced by the high temperature in dimensions higher than three. However, the temperature dependence is quite different from that of free theories. This may be due to the fact that the holographic CFT is strongly coupled and there is non-zero resistance in the holographic model. Remarkably, the temperature dependence of holographic anomalous currents is universal in the high temperature limit, which is independent of the choices of background magnetic fields.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑