Test of Hybrid Metric-Palatini f(R)-Gravity in Binary Pulsars
نویسندگان
چکیده
منابع مشابه
Hybrid Metric-Palatini Gravity
Recently, the phenomenology of f(R) gravity has been scrutinized. This scrutiny has been motivated by the possibility to account for the self-accelerated cosmic expansion without invoking dark energy sources. Besides, this kind of modified gravity is capable of addressing the dynamics of several self-gravitating systems alternatively to the presence of dark matter. It has been established that ...
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We study the effect of retardation of gravity in binary pulsars. It appears in pulsar timing formula as a periodic excess time delay to the Shapiro effect. The retardation of gravity effect can be large enough for observation in binary pulsars with the nearly edgewise orbits and relatively large ratio of the projected semimajor axis, x, to the orbital period of the pulsar, Pb. If one succeeds i...
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We compare the metric and the Palatini formalism to obtain the Einstein equations in the presence of higher-order curvature corrections that consist of contractions of the Riemann tensor, but not of its derivatives. We find that, with the exception of standard Einsteingravity, the two formalisms are not equivalent, but that the Palatini formalism is contained within the metric formalism, in the...
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ژورنال
عنوان ژورنال: Journal of Experimental and Theoretical Physics
سال: 2020
ISSN: 1063-7761,1090-6509
DOI: 10.1134/s1063776120100039