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arXiv 0904.0401hep-thgr-qc
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类光膜产生的球对称旋转虫洞

Spherically Symmetric and Rotating Wormholes Produced by Lightlike Branes

Eduardo Guendelman, Alexander Kaganovich, Emil Nissimov, Svetlana Pacheva

摘要:

具有动态(可变)张力的类光p-膜(LL-膜)允许简单而优雅的Polyakov型和它的对偶Nambu-Goto型世界体积作用量公式。在这里,我们首先简要描述LL-膜的动力学作为测试对象在各种有趣的物理背景下的黑洞类型,包括旋转的引力。接下来,我们表明,LL-膜是适当的引力源,提供适当的物质能量动量张量的爱因斯坦运动方程所需的生成可穿越的虫洞的解决方案,特别是,自洽的圆柱形旋转虫洞,与LL-膜占据他们的喉咙。在这里,动力学LL-膜张力起着重要作用,它被证明是负的,但可能是任意小的量级。作为一个特殊的解决方案,我们得到了可穿越的虫洞与Schwarzschild几何所产生的LL-膜定位在虫洞的喉咙,这代表了正确的一致实现的原始Einstein-Rosen的“桥”的流形。

英文摘要:

Lightlike p-branes (LL-branes) with dynamical (variable) tension allow simple and elegant Polyakov-type and dual to it Nambu-Goto-like world-volume action formulations. Here we first briefly describe the dynamics of LL-branes as test objects in various physically interesting gravitational backgrounds of black hole type, including rotating ones. Next we show that LL-branes are the appropriate gravitational sources that provide proper matter energy momentum tensors in the Einstein equations of motion needed to generate traversable wormhole solutions, in particular, self-consistent cylindrical rotating wormholes, with the LL-branes occupying their throats. Here a major role is being played by the dynamical LL-brane tension which turns out to be negative but may be of arbitrary small magnitude. As a particular solution we obtain traversable wormhole with Schwarzschild geometry generated by a LL-brane positioned at the wormhole throat, which represents the correct consistent realization of the original Einstein-Rosen "bridge" manifold.

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