论文标题
一般性的薄壳戴森巨型球
General-relativistic thin-shell Dyson mega-spheres
论文作者
论文摘要
我们考虑了一个奇特的概念，即检测任意高级的外星文明的概念，我们考虑了一种普遍的相关性薄壳戴森·梅加·米加（Dyson Mega-sphere）完全包围了一个类似于中心的恒星般的物体，并使用以色列-lanczos-lanczos-lanczos-lanczos-sen-sen交界处进行了完整的一般性依赖主义分析。我们将注意力集中在表面质量密度，表面应力，经典能量条件以及半球之间的力上。我们发现，在物理上可接受的区域中，NEC，WEC和SEC总是满足，而如果Dyson Mega-Sphere足够接近形成黑洞，则可能会违反DEC。我们还证明，最大力构的原始准本地版本F <= {1/4} f_ {stoney} = {1/4} f_ {planck}，如果dyson mega-sphere足够紧凑，就足够接近黑洞，很容易被违反。有趣的是，有一个有限的参数空间区域，可以违反最大力量的原始准本地版本，而无需违反DEC。最后，我们非常简短地讨论了嵌套的薄壳巨型球（Matrioshka配置）和厚壳Dyson Mega-Spheres的可能性。
Loosely inspired by the somewhat fanciful notion of detecting an arbitrarily advanced alien civilization, we consider a general-relativistic thin-shell Dyson mega-sphere completely enclosing a central star-like object, and perform a full general-relativistic analysis using the Israel--Lanczos--Sen junction conditions. We focus attention on the surface mass density, the surface stress, the classical energy conditions, and the forces between hemispheres. We find that in the physically acceptable region the NEC, WEC, and SEC are always satisfied, while the DEC can be violated if the Dyson mega-sphere is sufficiently close to forming a black hole. We also demonstrate that the original quasi-local version of the maximum force conjecture, F <= {1/4} F_{Stoney} = {1/4} F_{Planck}, can easily be violated if the Dyson mega-sphere is sufficiently compact, that is, sufficiently close to forming a black hole. Interestingly there is a finite region of parameter space where one can violate the original quasi-local version of the maximum force conjecture without violating the DEC. Finally, we very briefly discuss the possibility of nested thin-shell mega-spheres (Matrioshka configurations) and thick-shell Dyson mega-spheres.
