Holographic superconductor on Q-lattice

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	Holographic superconductor on Q-lattice
	Ling, Y; Liu, P; Niu, C; Wu, JP; Xian, ZY
刊名	JOURNAL OF HIGH ENERGY PHYSICS
	2015
期号	2 页码:59
关键词	Gauge-gravity correspondence Holography and condensed matter physics (AdS/CMT)
通讯作者	Niu, C (reprint author), Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China.
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.
学科主题	Physics
类目[WOS]	Physics, Particles & Fields
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/21095]
专题	理论物理研究所_理论物理所1978-2010年知识产出
推荐引用方式 GB/T 7714	Ling, Y,Liu, P,Niu, C,et al. Holographic superconductor on Q-lattice[J]. JOURNAL OF HIGH ENERGY PHYSICS,2015(2):59.
APA	Ling, Y,Liu, P,Niu, C,Wu, JP,&Xian, ZY.(2015).Holographic superconductor on Q-lattice.JOURNAL OF HIGH ENERGY PHYSICS(2),59.
MLA	Ling, Y,et al."Holographic superconductor on Q-lattice".JOURNAL OF HIGH ENERGY PHYSICS .2(2015):59.