宇宙学微扰的零平均值作为该理论和模拟的一个不可或缺的条件。
Zero average values of cosmological perturbations as an indispensable condition for the theory and simulations.
作者信息
Eingorn Maxim, Brilenkov Maxim, Vlahovic Branislav
机构信息
CREST and NASA Research Centers, North Carolina Central University, Fayetteville st. 1801, Durham, NC 27707 USA.
Department of Theoretical Physics and Astronomical Observatory, Odessa National University, Dvoryanskaya st. 2, Odessa, 65082 Ukraine.
出版信息
Eur Phys J C Part Fields. 2015;75(8):381. doi: 10.1140/epjc/s10052-015-3598-z. Epub 2015 Aug 22.
We point out a weak side of the commonly used determination of scalar cosmological perturbations lying in the fact that their average values can be nonzero for some matter distributions. It is shown that introduction of the finite-range gravitational potential instead of the infinite-range one resolves this problem. The concrete illustrative density profile is investigated in detail in this connection.
我们指出了常用的标量宇宙学微扰测定方法的一个弱点，即对于某些物质分布，它们的平均值可能非零。结果表明，引入有限范围的引力势而非无限范围的引力势可以解决这个问题。为此详细研究了具体的说明性密度分布。
Zotero 插件