Can f(R) gravity relieve $$H_0$$ and $$\sigma _8$$ tensions?
Keyword(s):
Type Ia
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AbstractTo investigate whether f(R) gravity can relieve current $$H_0$$ H 0 and $$\sigma _8$$ σ 8 tensions, we constrain the Hu-Sawicki f(R) gravity with Planck-2018 cosmic microwave background and redshift space distortions observations. We find that this model fails to relieve both $$H_0$$ H 0 and $$\sigma _8$$ σ 8 tensions, and that its two typical parameters $$\log _{10}f_{R0}$$ log 10 f R 0 and n are insensitive to other cosmological parameters. Combining the cosmic microwave background, baryon acoustic oscillations, Type Ia supernovae, cosmic chronometers with redshift space distortions observations, we give our best constraint $$\log _{10}f_{R0}<-6.75$$ log 10 f R 0 < - 6.75 at the $$2\sigma $$ 2 σ confidence level.
2020 ◽
Vol 2020
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pp. 015-015
1999 ◽
Vol 303
(3)
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pp. L47-L52
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2005 ◽
Vol 20
(06)
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pp. 1121-1131
CONSTRAINTS ON VARIABLE CHAPLYGIN GAS MODEL FROM TYPE IA SUPERNOVAE AND BARYON ACOUSTIC OSCILLATIONS
2010 ◽
Vol 25
(09)
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pp. 737-747
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2002 ◽
Vol 17
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pp. 2491-2496
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