The Gravitational Deflection of Light in f(R)-Gravity |
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| Authors: | Long Huang Feng He Hai Huang Min Yao |
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| Institution: | 1. Physics College, Hunan University of Science and Technology, XiangTan, 411201, Hunan Province, China
2. Department of Physics and Electronic Information Engineering, Xiangnan University, Chenzhou, 423000, China
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| Abstract: | Gravitation deflects light, which has been confirmed by a large number of observation data. f(R)-gravity is modification of Einstein’s gravity. According to the field equations obtained by the action of the f(R) form, a similar Schwarzschild metric is obtained. According to the condition that four-dimension momenta of the photon return to zero and conservation of covariant momenta, we obtain an equation of photon motion in a specific form of f(R)-gravity. We solve the equation to get gravitational deflection angle of light that grazes surface of sun and the calculation result is consistent with the experimental observation data. |
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