Applicability of the linearly perturbed FRW metric and Newtonian cosmology - Astrophysics > Cosmology and Nongalactic AstrophysicsReportar como inadecuado




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Abstract: It has been argued that the effect of cosmological structure formation on theaverage expansion rate is negligible, because the linear approximation to themetric remains applicable in the regime of non-linear density perturbations. Wediscuss why the arguments based on the linear theory are not valid. Weemphasise the difference between Newtonian gravity and the weak field, smallvelocity limit of general relativity in the cosmological setting.



Autor: Syksy Rasanen

Fuente: https://arxiv.org/



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