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题名: Holographic superconductors with z=2 Lifshitz scaling
作者: Bu, YY
刊名: PHYSICAL REVIEW D
出版日期: 2012
卷号: 86, 期号:4, 页码:46007
学科分类: Physics
通讯作者: Bu, YY (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
部门归属: [Bu, Yanyan] Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China; [Bu, Yanyan] Werner Heisenberg Inst, Max Planck Inst Phys, D-80805 Munich, Germany
英文摘要: We use gauge/gravity duality to explore strongly coupled superconductors with dynamical exponent z = 2. In the probe limit we numerically establish background solutions for the matter fields and plot the condensate versus the dimensionless temperature. We then investigate electromagnetic perturbations in order to compute the ac conductivity and also calculate the spectral function. Our results for the condensate and conductivity are qualitatively similar to those of the anti-de Sitter (AdS) superconductor. However, we find that (for both the s-wave and p-wave) the condensate does not approach a constant at very low temperature and the conductivity goes to 1 from below but never exceeds it in the high frequency limit, in contrast to the AdS black hole. We do not see a peak at nonzero frequency in the imaginary part of the ac conductivity along the x direction for the p-wave case. These features are due to the nontrivial dynamical exponent. To be specific, the black hole geometry considered in this work is anisotropic between space and time, very different from the Schwarzschild-AdS black hole, which results in different asymptotic behaviors of temporal and spatial components of gauge fields than those in the Schwarzschild-AdS black hole.
资助者: MPS-CAS Doctoral Training Program
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000307728300009
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15044
Appears in Collections:理论物理所2012年知识产出_期刊论文

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Recommended Citation:
Bu, YY. Holographic superconductors with z=2 Lifshitz scaling[J]. PHYSICAL REVIEW D,2012,86(4):46007.
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