Why weakly non-linear effects are small in a zero-pressure cosmology
Why weakly non-linear effects are small in a zero-pressure cosmology
复制标题
为什么弱非线性效应在零压力宇宙学中很小
DOI:
10.1093/mnras/203.2.345
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发表时间:
1983
影响因子:
4.8
通讯作者:
E. Vishniac
中科院分区:
文献类型:
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作者:
E. Vishniac
We present a calculation of the first-order non-linear interactions between density perturbations in an expanding, Newtonian cosmology. We show that these terms are always negligible if the power falls off less steeply thank4at small wavenumber, and ifis less than one at all scales larger than the scale in question.