Matches in SemOpenAlex for { <https://semopenalex.org/work/W2520348892> ?p ?o ?g. }
- W2520348892 abstract "Cosmic backreaction refers to the general question of whether a homogeneous and isotropic cosmological model is able to predict the correct expansion dynamics of our inhomogeneous Universe. One aspect of this issue concerns the validity of the continuous approximation: does a system of point masses expand the same way as a fluid does? This article shows that it is not exactly the case in Newtonian gravity, although the associated corrections vanish in an infinite Universe. It turns out that Gauss's law is a key ingredient for such corrections to vanish. Backreaction, therefore, generically arises in alternative theories of gravitation, which threatens the trustworthiness of their cosmological tests. This phenomenon is illustrated with a toy model of massive gravity." @default.
- W2520348892 created "2016-09-23" @default.
- W2520348892 creator A5036719760 @default.
- W2520348892 date "2017-06-06" @default.
- W2520348892 modified "2023-09-23" @default.
- W2520348892 title "Cosmic backreaction and Gauss’s law" @default.
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- W2520348892 doi "https://doi.org/10.1103/physrevd.95.124009" @default.
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