Magnetic response in the holographic insulator/superconductor transition
Magnetic response in the holographic insulator/superconductor transition
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DOI：
10.1007/jhep04(2012)135
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发表时间：
2012-04
影响因子：
5.4
通讯作者：
M. Montull;O. Pujolàs;A. Salvio;Pedro J. Silva
中科院分区：
文献类型：
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作者：
M. Montull;O. Pujolàs;A. Salvio;Pedro J. Silva
我们研究了具有绝缘“正常”相的全息超导体的磁响应。这些材料可以实现为一个CFT紧化的一个圆，这是对偶的AdS孤子几何。我们研究的响应下，i）磁场和ii）威尔逊线上的圆。磁场导致涡旋的形成，并允许人们推断超导体是II型的。对威尔逊线的响应是Aharonov-Bohm类效应。这些在全息导体/超导体转变中被抑制，但在绝缘体情况下则不受抑制。因此，全息术预测一般绝缘体比导体显示更强的Aharonov-Bohm效应。在流体力学极限下，AdS孤子被解释为超固体。我们的研究结果意味着，超固体显示未抑制Aharonov-Bohm（或“Sagnac”）的影响，强于超流体。
We study the magnetic response of holographic superconductors exhibiting an insulating ‘normal’phase. These materials can be realized as a CFT compactified on a circle, which is dual to the AdS Soliton geometry. We study the response under i) magnetic fields and ii) a Wilson line on the circle. Magnetic fields lead to formation of vortices and allows one to infer that the superconductor is of type II. The response to a Wilson line is in the form of Aharonov-Bohm-like effects. These are suppressed in the holographic conductor/superconductor transition but, instead, they are unsuppressed for the insulator case. Holography, thus, predicts that generically insulators display stronger Aharonov-Bohm effects than conductors. In the fluid-mechanical limit the AdS Soliton is interpreted as a supersolid. Our results imply that supersolids display unsuppressed Aharonov-Bohm (or ‘Sagnac’) effects—stronger than in superfluids.