Gravitational constant in f(R) theories of gravity with non-minimal coupling between matter and geometry
Jun Wang** , Li-Jia Cao
School of Physics and Astronomy, Yunnan University, Kunming 650091
Abstract ：We study the effect of the non-minimal coupling between matter and geometry on the gravitational constant in the context of $f(R)$ theories of gravity on cosmic scales. For a class of $f(R)$ models, the result shows that the value of the gravitational constant not only changes over time but also has the dampened oscillation behavior. Compared with the result of the standard ${\it \Lambda}$CDM model, the consequence suggests that the coupling between matter and geometry should be weak.
收稿日期: 2018-08-05
出版日期: 2018-11-23
:
98.80.-k
(Cosmology)
98.80.Jk
(Mathematical and relativistic aspects of cosmology)
04.20.-q
(Classical general relativity)
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2018, Vol. 35 
