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- W3100555725 endingPage "008" @default.
- W3100555725 startingPage "008" @default.
- W3100555725 abstract "In this work, we study the large scale structure formation in the modified gravity in the framework of Palatini formalism and compare the results with the equivalent smooth dark energy models as a tool to distinguish between these models. Through the inverse method, we reconstruct the dynamics of universe, modified gravity action and the structure formation indicators like the screened mass function and gravitational slip parameter. Consequently, we extract the matter density power spectrum for these two models in the linear regime and show that the modified gravity and dark energy models predictions are slightly different from each other at large scales. It is also shown that the growth index in the modified gravity unlike to the dark energy models is a scale dependent parameter. We also compare the results with those from the modified gravity in the metric formalism. The modification on the structure formation can also change the CMB spectrum at large scales however due to the cosmic variance it is hard to detect this signature. We show that a large number of SNIa data in the order of 2000 will enable us to reconstruct the modified gravity action with a suitable confidence level and test the cosmic acceleration models by the structure formation." @default.
- W3100555725 created "2020-11-23" @default.
- W3100555725 creator A5035164270 @default.
- W3100555725 creator A5088519183 @default.
- W3100555725 date "2010-12-09" @default.
- W3100555725 modified "2023-10-06" @default.
- W3100555725 title "Structure formation in<i>f</i>(<i>R</i>) gravity: a distinguishing probe between the dark energy and modified gravity" @default.
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- W3100555725 doi "https://doi.org/10.1088/1475-7516/2010/12/008" @default.