MG13 - Talk detail |
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Participant |
Kase, Ryotaro | |||||||
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Institution |
Tokyo University of Science - 1-3, Kagurazaka - Tokyo - Shinjyuku-ku - Japan | |||||||
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Session |
AT4 |
Accepted |
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Order |
Time |
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Talk |
Oral abstract |
Title |
Vainshtein mechanism in second-order scalar-tensor theories | |||||
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Abstract |
In second-order scalar-tensor theories we study how the Vainshtein mechanism works in a spherically symmetric background with a matter source. In the presence of the field coupling with the Ricci scalar we generally derive the Vainshtein radius within which the General Relativistic behavior is recovered even for the coupling constant of the order of unity. Our analysis covers the models such as the extended Galileon and Brans-Dicke theories with a dilatonic field self-interaction. We show that, if these models are responsible for the cosmic acceleration today, the corrections to gravitational potentials are generally small enough to be compatible with local gravity constraints. |
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