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题名: p-Wave superconductors in D-brane systems
作者: Bu, YY
刊名: NUCLEAR PHYSICS B
出版日期: 2012
卷号: 864, 期号:3, 页码:806-822
关键词: STRING THEORY
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: Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China
英文摘要: In this work we take the intersecting D-brane models to explore some properties of p-wave superconductor at strong coupling. Our studies are focused on four-dimensional spacetime, which is not completely researched as in planar case. Optimistically, the AdS/CFT approach to superconductor, or more precisely superconducting-like phase transition, can give us some intuitions about mysterious high T-c superconductors. Concretely, we use defect D4/D6 and D4/D4 (noncritical) models to carry out comparative investigations. To make the system in the finite temperature bath, we assume that the superconducting phase is in the deconfined and chiral symmetry restoring phase for black D4-brane geometry. For the background fields, we use both analytical and numerical methods to solve the coupled nonlinear equations of motion. Near the phase transition, both methods give the mean filed behavior for the superconducting condensate. We then study gauge field perturbations of the systems to probe the AC conductivity. Similar to previous results, there comes out a gap in low frequency regime and the conductivity gets exponentially small as the condensation is enhanced. In contrast to previous investigations, we also compute the AC conductivity along the x direction, which needs to study a coupled sets of fluctuation modes. This shows us the anisotropic feature of p-wave superconductors. (C) 2012 Elsevier B.V. All rights reserved.
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:000308049700015
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/14982
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. p-Wave superconductors in D-brane systems[J]. NUCLEAR PHYSICS B,2012,864(3):806-822.
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