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题名: Holographic superconductor on Q-lattice
作者: Ling, Y;  Liu, P;  Niu, C;  Wu, JP;  Xian, ZY
刊名: JOURNAL OF HIGH ENERGY PHYSICS
出版日期: 2015
期号: 2, 页码:59
关键词: Gauge-gravity correspondence ;  Holography and condensed matter physics (AdS/CMT)
学科分类: Physics
DOI: http://dx.doi.org/10.1007/JHEP02(2015)059
通讯作者: Niu, C (reprint author), Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China.
文章类型: Article
英文摘要: We construct the simplest gravitational dual model of a superconductor on Q-lattices. We analyze the condition for the existence of a critical temperature at which the charged scalar field will condense. In contrast to the holographic superconductor on ionic lattices, the presence of Q-lattices will suppress the condensate of the scalar field and lower the critical temperature. In particular, when the Q-lattice background is dual to a deep insulating phase, the condensation would never occur for some small charges. Furthermore, we numerically compute the optical conductivity in the superconducting regime. It turns out that the presence of Q-lattice does not remove the pole in the imaginary part of the conductivity, ensuring the appearance of a delta function in the real part. We also evaluate the gap which in general depends on the charge of the scalar field as well as the Q-lattice parameters. Nevertheless, when the charge of the scalar field is relatively large and approaches the probe limit, the gap becomes universal with omega(g) similar or equal to 9T(c) which is consistent with the result for conventional holographic superconductors.
类目[WOS]: Physics, Particles & Fields
收录类别: SCI
项目资助者: Natural Science Foundation of China [11275208, 11305018, 11178002] ;  Jiangxi young scientists (JingGang Star) program ;  555 talent project of Jiangxi Province ;  Program for Liaoning Excellent Talents in University [LJQ2014123]
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/21095
Appears in Collections:理论物理所2015年知识产出_期刊论文

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Recommended Citation:
Ling, Y,Liu, P,Niu, C,et al. Holographic superconductor on Q-lattice[J]. JOURNAL OF HIGH ENERGY PHYSICS,2015(2):59.
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