人类是否生活在一个大黑洞之中？科学家们提出了“宇宙膨胀”的新的解释理论，一起来看看吧。

Are We Living Inside a Black Hole?

我们是否生活在黑洞之中？

Scientists trying to explain the universe’s accelerating expansion usually point to dark energy, which seems to be pushing everything apart.

科学家习惯利用暗物质理论来解释宇宙加速膨胀的问题，他们认为暗物质会将一切物质推向远方。

But an Indiana University professor has a new theory, reports New Scientist: We’re inside a black hole that exists in another universe. Specifically, a black hole that rebounded, somewhat like a spring.

但是最近一位来自印第安纳大学的教授提出了一个有关于此的新理论。在一篇发表在新科学家杂志上的文章中他写道，我们的宇宙生活在存在于另一个宇宙中的一个大黑洞里面，而且更加特殊的是，这个黑洞是有弹力的，有点类似于我们平常见到的那种弹簧。

Some fairly mind-blowing physics is involved here, but the gist is that Nikodem Poplawski of IU-Bloomington used a modified version of Einstein’s general relativity equation set that takes particle spin into account.

一些被认为是权威的物理学家也支持这一理论，但是主要的支持者还是来自布鲁明顿地区印第安纳大学的科德姆?波普拉瓦斯基（Nikodem Poplawski），他使用了一个改良的爱因斯坦的广义相对论，这个理论考虑到粒子自旋的问题。

Including this variable makes it possible to calculate torsion, part of the geometry of space-time. It also gets rid of the black hole singularity, a phenomenon that general relativity cannot explain.

科德姆?波普拉瓦斯基的理论考虑到了这个变量，这使得科学家们可以着手研究计算几何学中的时空扭曲问题。这个理论同时避免了研究黑洞“奇点”的问题（这个问题通常认为是没法解释的）。

In a study published earlier this year, Poplawski said when the density of matter reaches epic proportions, torsion counters gravity. This prevents matter from compressing indefinitely to a singularity of infinite density. Instead, matter rebounds like a spring, and starts expanding again.

在今年早些时候发表的一篇论文中波普拉瓦斯基提到，当一个事物的密度达到一定的比例时，它的扭曲变化便会脱离重力的控制。这保证了事物不会由一定质量被压缩成为一个无限大密度的“奇点”，相反地，事物像弹簧一样反弹，并且开始重新扩张。

In Poplawski's latest study, his calculations show that space-time inside the black hole expands to about 1.4 times its smallest size in as little as 10-46 seconds -- two orders of magnitude faster, for lack of a better word, than the Planck time. This brisk bounce-back could have been what led to the expanding universe that we see today.

在波普拉瓦斯基最新发表的论文中他提到了他的计算结果，那就是在黑洞中的时空在不到10～46秒的时间里扩张了1.4倍，二者以数量级的速度快速扩张，远远超过普朗克时间的数量级。这也许就可以解释我们现在所处的这个宇宙的状况。

But here's the real kicker: as Poplawski says, we may not be living in our universe at all; we might be living inside a rebounded black hole that exists in a different universe.

就如同波普拉瓦斯基所言，这就意味着我们并不完全生活在我们所处的宇宙中，我们也许生活在一个存在于其他宇宙中的有弹性的黑洞之中。

We could tell by measuring the preferred direction of our universe. A spinning black hole would have imparted some spin to the space-time inside it, which would violate a law of symmetry that links space and time. This might explain why neutrinos oscillate between their antimatter and regular-matter states.

也许通过衡量我们所处的宇宙的易磁化方向我们可以了解更多。一个本身就在旋转中的黑洞也许可以削弱在它内部的时空旋转，而这也许可以改变时空对称的自然法则。这也许还可以解释中微子为什么会在它的反物质状态和一般物质状态间不停摇摆的问题了。