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arXiv 1106.2291hep-th
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Lifshitz黑洞背景中的全息电荷输运

Holographic charge transport in Lifshitz black hole backgrounds

José P. S. Lemos, Da-Wei Pang

摘要:

研究了畴壁结构中的电荷输运性质,畴壁结构的近视界红外几何形状为Lifshitz黑洞,紫外几何形状为AdS。规范场的作用量包含标准麦克斯韦项加上与麦克斯韦场强耦合的外尔张量。在四维中,我们通过膜范例和久保公式计算电导率。这两种方法之间的精确协议。此外,我们执行的四维电磁对偶性在我们的畴壁背景的分析,并发现电流-电流关联函数的纵向和横向分量之间的关系和那些“双”同行持有,无论近地平线IR几何。在极端的电导率也进行了研究。执行向更高维度的推广。

英文摘要:

We study charge transport properties in a domain-wall geometry, whose near horizon IR geometry is a Lifshitz black hole and whose UV geometry is AdS. The action for the gauge field contains the standard Maxwell term plus the Weyl tensor coupled to Maxwell field strengths. In four dimensions we calculate the conductivity via both the membrane paradigm and Kubo's formula. Precise agreements between both methods are obtained. Moreover, we perform an analysis of the four-dimensional electro-magnetic duality in our domain-wall background and find that the relation between the longitudinal and transverse components of the current-current correlation functions and those of the `dual' counterparts holds, irrespective of the near horizon IR geometry. Conductivity at extremality is also investigated. Generalizations to higher dimensions are performed.

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