Holographic Josephson junction from massive gravity
Holographic Josephson junction from massive gravity
复制标题
来自大重力的全息约瑟夫森结
DOI：
10.1103/physrevd.93.104009
复制
发表时间：
2016
影响因子：
5
通讯作者：
Zhang Hai Qing
中科院分区：
文献类型：
--
作者：
Hu Ya Peng;Li Huai Fan;Zeng Hua Bi;Zhang Hai Qing
研究了重力作用下全息超导体-正常金属-超导体(SNS)约瑟夫结。在化学势均匀的情况下，我们发现引力子的质量将使正常的金属-超导体相变更难发生。在约瑟夫森结的全息模型中，发现最大隧穿电流随引力子质量的增加而减小。此外，结的相干长度也随着引力子质量的增加而减小。如果在边界场理论中将引力子质量解释为动量耗散效应，则表明动量耗散越强，相干长度越小。Ar X IV：1 51 2.07 03 5v 2[He Pth]2 8 D EC 2 01 5
We study the holographic superconductor-normal metal-superconductor (SNS) Josephon junction in the massive gravity. In the homogeneous case of the chemical potential, we find that the graviton mass will make the normal metal-superconductor phase transition harder to take place. In the holographic model of Josephson junction, it is found that the maximal tunneling current will decrease according to the graviton mass. Besides, the coherence length of the junction decreases as well with respect to the graviton mass. If one interprets the graviton mass as the effect of momentum dissipation in the boundary field theory, it indicates that the stronger the momentum dissipation is, the smaller the coherence length is. ar X iv :1 51 2. 07 03 5v 2 [ he pth ] 2 8 D ec 2 01 5