A comment on no-force conditions for black holes and branes
A comment on no-force conditions for black holes and branes
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关于黑洞和膜的无力条件的评论
DOI：
10.1088/1361-6382/abe01a
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发表时间：
2020
影响因子：
3.5
通讯作者：
T. Van Riet
中科院分区：
文献类型：
--
作者：
T. Van Riet
在弱引力猜想的背景下，黑洞和膜的准极值性概念最近被定义为具有消失的视界尺寸或表面引力的性质。据推导，这种物体服从无力条件。在这个简短的说明中，我提出了一个简化的推导，它基本上存在于Breitenlohner，Gibbons和Maison开创的类时约化的形式主义中。这种形式主义还提供了由轴子通量产生的引力瞬子（和虫洞）的准极端性的自然定义，并加强了宏观轴子虫洞在路径积分中没有贡献的论点，因为它们在欧几里得意义上是自排斥的。
In the context of the weak gravity conjecture the notion of quasi-extremality for black holes and branes was recently defined as the property of having either vanishing horizon size or surface gravity. It was derived that such objects obey a no-force condition. In this short note I present a simplified derivation that is essentially present in the formalism of timelike reduction pioneered by Breitenlohner, Gibbons and Maison. This formalism also provides the natural definition of quasi-extremality for gravitational instantons (and wormholes) sourced by axion fluxes and strengthens the argument that macroscopic axion wormholes do not contribute in the path integral since they are self-repulsive in a Euclidean sense.
影响因子：
5.4
作者：
Heidenreich, Ben
通讯作者：
Heidenreich, Ben