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- W850773657 abstract "Big bang nucleosynthesis in a modified gravity model of $f(R)propto R^n$ is investigated. The only free parameter of the model is a power-law index $n$. We find cosmological solutions in a parameter region of $1< n leq (4+sqrt{6})/5$. We calculate abundances of $^4$He, D, $^3$He, $^7$Li, and $^6$Li during big bang nucleosynthesis. We compare the results with the latest observational data. It is then found that the power-law index is constrained to be $(n-1)=(-0.86pm 1.19)times 10^{-4}$ (95 % C.L.) mainly from observations of deuterium abundance as well as $^4$He abundance." @default.
- W850773657 created "2016-06-24" @default.
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- W850773657 date "2015-05-20" @default.
- W850773657 modified "2023-10-16" @default.
- W850773657 title "Corrected constraints on big bang nucleosynthesis in a modified gravity model of<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mi>f</mml:mi><mml:mo stretchy=false>(</mml:mo><mml:mi>R</mml:mi><mml:mo stretchy=false>)</mml:mo><mml:mo>∝</mml:mo><mml:msup><mml:mi>R</mml:mi><mml:mi>n</mml:mi></mml:msup></mml:math>" @default.
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- W850773657 doi "https://doi.org/10.1103/physrevd.91.104023" @default.
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