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- W2963076441 abstract "Experiments on the violation of equivalence principle (EP) and solar system give a number of constraints in which any modified gravity model must satisfy them. We study these constraints on a kind of $f(R)$ gravity as $f(R) = R(1pm epsilon ln({R over R_c}))$. For this investigation we use of chameleon mechanism and show that a spherically body has thin-shell in this model. So that we obtain an effective coupling of the fifth force which is suppressed through a chameleon mechanism. Also, we obtain $gamma_{PPN} = 1 pm 1.13 times10^{-5}$ which is agreement with experiment results. At last, we show that for $R_c thickapprox rho_c$ this model is consistent with EP, thin shell condition and fifth force of chameleon mechanism for $epsilon backsimeq 10^{-14}$." @default.
- W2963076441 created "2019-07-30" @default.
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- W2963076441 date "2010-06-10" @default.
- W2963076441 modified "2023-09-23" @default.
- W2963076441 title "Solar System Constraints on a Viable $f(R)$) Gravity by Chameleon Mechanism" @default.
- W2963076441 hasPublicationYear "2010" @default.
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