论文标题
空间平坦的宇宙的初始能量 - 可能起源的提示
Initial Energy of a Spatially Flat Universe -- a Hint of its Possible Origin
论文作者
论文摘要
宇宙大爆炸起源的证据确实令人信服，尽管它的原因仍然是一个完全的谜。但是，由于宇宙时空向我们揭示了不断改进的细节，但是，我们开始完善其可能的初始条件的范围 - 至少在当前物理理论的框架内。宇宙似乎在空间上是平坦的，在这里我们以清晰，直接的术语讨论了为什么这种特征意味着具有零动力学加重力能量的宇宙，尽管显然不是零总能量。这样的结果带来了很大的后果，因为宇宙可能已经开始存在作为量子波动。这是来自“无”的，或者是一个现有的真空？非零的总能源似乎排除了以前的情况，但不一定是后者，尽管这将提出一个问题，即对非零能量的波动如何可以在135亿年后看到它足够长的时间或经典化。因此，对宇宙空间曲率的高精度测量可能构成了第一个影响量子开始的明显证据。
The evidence for a Big Bang origin of the Universe is truly compelling, though its cause remains a complete mystery. As the cosmic spacetime is revealed to us with ever improving detail, however, we are beginning to refine the range of its possible initial conditions -- at least within the framework of current physical theories. The Universe, it seems, is spatially flat, and here we discuss in clear, straightforward terms why this trait implies a cosmos with zero kinetic plus gravitational energy, though apparently not zero total energy. Such an outcome has far reaching consequences because of the possibility that the Universe may have begun its existence as a quantum fluctuation. Was this from `nothing,' or perhaps a pre-existing vacuum? A non-zero total energy would seemingly preclude the former scenario, but not necessarily the latter, though this would then raise the question of how a fluctuation with non-zero energy could have lived long enough, or classicalized, for us to see it 13.5 billion years later. The high-precision measurement of the Universe's spatial curvature may thus constitute the first tangible piece of evidence impacting a possible quantum beginning.
