Zero average values of cosmological perturbations as an indispensable condition for the theory and simulations
Zero average values of cosmological perturbations as an indispensable condition for the theory and simulations
复制标题
宇宙扰动的零平均值是理论和模拟不可或缺的条件
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
B. Vlahovic
中科院分区：
文献类型：
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作者：
M. Eingorn;Maxim Brilenkov;B. Vlahovic
我们指出了常用的标量宇宙学微扰测定的一个弱点在于，对于某些物质分布，它们的平均值可能是非零的。结果表明，引入有限范围引力势而不是无限范围引力势解决了这一问题。在这方面，详细研究了具体的说明性密度分布。
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.