Blandford-Znajek process in vacuo and its holographic dual
Blandford-Znajek process in vacuo and its holographic dual
复制标题
真空 Blandford-Znajek 工艺及其全息双
DOI：
10.1103/physrevd.99.124013
复制
发表时间：
2019
影响因子：
5
通讯作者：
Rodriguez, Maria J.
中科院分区：
文献类型：
--
作者：
Jacobson, Ted;Rodriguez, Maria J.
Blandford和Znajek发现了一个过程，通过这个过程，一个旋转的黑洞可以将旋转能量转移到等离子体中，为类星体的能量和喷流发射提供了一种机制。在这里，我们描述了这种机制的一个版本，它只在黑洞外部的真空电磁场中运行。设置，这是不天体物理现实的，涉及一个圆柱形黑洞或一个生活在超时空维度，并在一个简单的，封闭的形式给出了一个广泛的度量。对于一维渐近反德西特黑洞，这种机制的全息对偶是角动量和能量通过电阻耦合从包含电场的旋转热态转移到比热态旋转更慢的外部电荷密度。特别是，由于焦耳加热导致的热态熵增加与黑洞的贝肯斯坦-霍金熵增加相匹配。
Blandford and Znajek discovered a process by which a spinning black hole can transfer rotational energy to a plasma, offering a mechanism for energy and jet emissions from quasars. Here we describe a version of this mechanism that operates with only vacuum electromagnetic fields outside the black hole. The setting, which is not astrophysically realistic, involves either a cylindrical black hole or one that lives inspacetime dimensions, and the field is given in simple, closed form for a wide class of metrics. For asymptotically anti–de Sitter black holes indimensions, the holographic dual of this mechanism is the transfer of angular momentum and energy, via a resistive coupling, from a rotating thermal state containing an electric field to an external charge density rotating more slowly than the thermal state. In particular, the entropy increase of the thermal state due to Joule heating matches the Bekenstein-Hawking entropy increase of the black hole.