离散宇宙学模型中的分段静默
Piecewise Silence in Discrete Cosmological Models
摘要：
我们考虑一族宇宙学模型，其中所有的质量被限制在一个规则的晶格相同的黑洞。通过利用反射对称性的平面平分这些晶格成相同的一半，我们能够考虑一些几何区别的表面，存在于每个人的演变。我们发现，反射对称表面的演化方程可以写成一组简单的类弗里德曼方程，源项的行为就像一组相互作用的有效流体。然后，我们表明，引力波有效地被困在小房间的所有时间，并没有自由地传播整个时空。因此，每个腔室都像与宇宙的其他部分隔离一样进化。我们称这种现象为“分段沉默”。
英文摘要：
We consider a family of cosmological models in which all mass is confined to a regular lattice of identical black holes. By exploiting the reflection symmetry about planes that bisect these lattices into identical halves, we are able to consider the evolution of a number of geometrically distinguished surfaces that exist within each of them. We find that the evolution equations for the reflection symmetric surfaces can be written as a simple set of Friedmann-like equations, with source terms that behave like a set of interacting effective fluids. We then show that gravitational waves are effectively trapped within small chambers for all time, and are not free to propagate throughout the space-time. Each chamber therefore evolves as if it were in isolation from the rest of the universe. We call this phenomenon "piecewise silence".
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
