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arXiv 0908.4195hep-thgr-qc
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引力物质膜拉格朗日量的非奇异黑洞

Non-singular black holes from gravity-matter-brane lagrangians

Eduardo Guendelman, Alexander Kaganovich, Emil Nissimov, Svetlana Pacheva

摘要:

本文研究了体Einstein-Maxwell-Kalb-Ramond系统与余维一带电类光动态张力p膜(LL膜)的自洽耦合.后者是由一个明显的reparametrization-invariant世界体积行动显着不同的普通Nambu-Goto之一。我们表明,LL-膜是适当的引力和电荷源的Einstein-Maxwell-Kalb-Ramond运动方程需要产生一个自洽的解决方案,描述非奇异黑洞。后者由de Sitter内部区域和外部Reissner-Nordstroem区域沿着它们的公共视界(它是从Reissner-Nordstroem侧的内部视界)粘合在一起组成。匹配视界自动地被LL-膜占据,作为其世界体积拉格朗日动力学的结果,该动力学在内部区域动态地产生宇宙学常数,并且唯一地确定外部区域的质量和电荷参数。利用类似的技巧,我们构造了一个耦合到电中性LL膜的Einstein-Maxwell系统的自洽虫洞解,它描述了一个非奇异黑洞区域的两个完全相同的副本,它们是内视界上方的外Reissner-Nordstroem区域,沿着LL膜占据的公共视界(内Reissner-Nordstroem视界)粘在一起。两个黑洞“宇宙”的相应质量和电荷参数由动态LL膜张力明确确定。这也提供了Misner-Wheeler“不带电带电”现象的一个明确例子。最后,这个连接两个非奇异黑洞的虫洞解可以转化为Kantowski-Sachs弹跳宇宙学解的一个特例。

英文摘要:

We consider self-consistent coupling of bulk Einstein-Maxwell-Kalb-Ramond system to codimension-one charged lightlike p-brane with dynamical (variable) tension (LL-brane). The latter is described by a manifestly reparametrization-invariant world-volume action significantly different from the ordinary Nambu-Goto one. We show that the LL-brane is the appropriate gravitational and charge source in the Einstein-Maxwell-Kalb-Ramond equations of motion needed to generate a self-consistent solution describing non-singular black hole. The latter consists of de Sitter interior region and exterior Reissner-Nordstroem region glued together along their common horizon (it is the inner horizon from the Reissner-Nordstroem side). The matching horizon is automatically occupied by the LL-brane as a result of its world-volume lagrangian dynamics, which dynamically generates the cosmological constant in the interior region and uniquely determines the mass and charge parameters of the exterior region. Using similar techniques we construct a self-consistent wormhole solution of Einstein-Maxwell system coupled to electrically neutral LL-brane, which describes two identical copies of a non-singular black hole region being the exterior Reissner-Nordstroem region above the inner horizon, glued together along their common horizon (the inner Reissner-Nordstroem one) occupied by the LL-brane. The corresponding mass and charge parameters of the two black hole "universes" are explicitly determined by the dynamical LL-brane tension. This also provides an explicit example of Misner-Wheeler "charge without charge" phenomenon. Finally, this wormhole solution connecting two non-singular black holes can be transformed into a special case of Kantowski-Sachs bouncing cosmology solution.

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