论文标题
带有异国物质和银河晕孔的虫洞的重力熵
Gravitational entropy of wormholes with exotic matter and in galactic halos
论文作者
论文摘要
在这项工作中，我们研究和比较了由外来物质和银河系中的虫洞形成的可横向虫洞喉咙附近的重力熵的特征。我们已经验证了这些虫洞在喉部附近地区的重力熵和熵密度对于同一喉咙的物体无法区分，尽管事实是由不同的指标和不同的能量弹药张量描述的。我们发现，在这两种情况下，引力熵密度在喉咙附近有分歧，这可能是由于此时的非平凡拓扑，但是有趣的解释是，可以通过这些虫洞的喉咙携带最大信息通量。此外，我们发现两者都具有类似于霍金·贝肯斯坦（Hawking-Bekenstein）非旋转和无旋转电荷黑洞的熵行为。
In this work we study and compare the features of gravitational entropy near the throat of transversable wormholes formed by exotic matter and wormholes in galactic halos. We have verified that gravitational entropy and entropy density of these wormholes in regions near their throats are indistinguishable for objects of same throat, despite the fact they are described by different metrics and by distinct energy-momentum tensors. We have found that the gravitational entropy density diverges near the throat for both cases, probably due to a non-trivial topology at this point, however allowing the interesting interpretation that a maximum flux of information can be carried through the throat of these wormholes. In addition, we have found that both are endowed with an entropic behaviour similar to Hawking-Bekenstein's entropy of non-rotating and null charge black holes.
