MG13 - Talk detail |
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Participant |
Jarv, Laur | |||||||
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Institution |
University of Tartu - Ravila 14C - Tartu - - Estonia | |||||||
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Session |
AT4 |
Accepted |
Yes |
Order |
11 |
Time |
15' | |
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Talk |
Oral abstract |
Title |
Scalar-tensor and multiscalar-tensor cosmology in the general relativity limit | |||||
| Co-authors | Piret Kuusk, Margus Saal, Erik Randla | |||||||
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Abstract |
We consider Jordan frame scalar-tensor gravity with arbitrary potential and coupling functions in flat FLRW cosmological spacetimes, in the dust matter and potential dominated epochs. We develop and apply an approximation scheme in the regime close to the so-called limit of general relativity and solve the ensuing nonlinear equations for the scalar field and Hubble parameter analytically in cosmological time. This allows us to distinguish the theories with solutions that asymptotically converge to general relativity and draw some implications about the cosmological dynamics near this limit. Further, we also apply these methods and get some results in the generalized case with multiple scalar fields. |
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