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arXiv 1403.0752hep-thgr-qc
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一个静止的Bianchi黑膜在没有平移对称的方向上能有动量吗?

Can a stationary Bianchi black brane have momentum along the direction with no translational symmetry?

Norihiro Iizuka, Akihiro Ishibashi, Kengo Maeda

摘要:

Bianchi黑膜(具有均匀但各向异性的视野的黑膜解,按Bianchi类型分类)提供了一个考虑晶格结构的简单全息设置。在全息超导体的情况下,我们有一个持续的电流与晶格。相应地,我们预期在对偶引力面,黑膜应该沿着晶格结构的方向携带一些动量,在那里平移不变性被破坏。基于这种期望,我们考虑是否-如果可能的话,在什么情况下-一个Bianchi黑膜可以沿着非平移不变性的方向有动量。首先,我们表明,这{ \it不能}的情况下,在Einstein-Maxwell膨胀理论的某类固定Bianchi黑膜解决方案。然后,我们还表明,这{ \it可以}的情况下,一些Bianchi VII $_0$黑膜的数值构造这样一个解决方案,在爱因斯坦-麦克斯韦理论与一个额外的向量场的源项。这个解的视界在视界上具有平移不变性,并传递动量(当紧化时是“旋转的”)。然而,这种平移不变性恰好在视界之外被打破。这表明存在一个黑膜解,它是正则的,但在视界上是非解析的,从而回避了黑洞刚性定理。

英文摘要:

Bianchi black branes (black brane solutions with homogeneous but anisotropic horizons classified by the Bianchi type) provide a simple holographic setting with lattice structures taken into account. In the case of holographic superconductor, we have a persistent current with lattices. Accordingly, we expect that in the dual gravity side, a black brane should carry some momentum along a direction of lattice structure, where translational invariance is broken. Motivated by this expectation, we consider whether---and if possible, in what circumstances---a Bianchi black brane can have momentum along a direction of no-translational invariance. First, we show that this {\it cannot} be the case for a certain class of stationary Bianchi black brane solutions in the Einstein-Maxwell-dilation theory. Then we also show that this {\it can} be the case for some Bianchi VII$_0$ black branes by numerically constructing such a solution in the Einstein-Maxwell theory with an additional vector field having a source term. The horizon of this solution admits a translational invariance on the horizon and conveys momentum (and is "rotating" when compactified). However this translational invariance is broken just outside the horizon. This indicates the existence of a black brane solution which is regular but non-analytic at the horizon, thereby evading the black hole rigidity theorem.

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