MG13 - Talk detail |
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Participant |
Hiramatsu, Takashi | |||||||
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Institution |
Yukawa Institute for Theoretical Physics, Kyoto University - Kitashirakawa Oiwake-cho - Kyoto - - Japan | |||||||
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Session |
AT4 |
Accepted |
Yes |
Order |
12 |
Time |
15' | |
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Talk |
Oral abstract |
Title |
On the Vainshtein mechanism for two body system in DGP model | |||||
| Co-authors | Wayne Hu, Kazuya Koyama, Fabian Schmidt | |||||||
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Abstract |
The modification of gravity theory like Dvali-Gabadadze-Porrati (DGP) model and Galileon models provides a solution to the present accelerating expansion of the universe. These models have an additional scalar degree of freedom in the gravity sector, and also have a mechanism to screen this field, called Vainshtein mechanism, recovering General Relativity due to the highly non-linear nature of the scalar field. In this talk, we focus on the Vainshtein mechanism in DGP model, and study numerically the non-linear behaviours of the scalar field in a static two-body system. We also give some suggestions of the further modifications to the past predictions of the Solar-system tests such as an anomalous precession of a planet/satellite. |
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