Abstract
Braneworld scenarios consider our observable universe as a brane embedded in a 5D space, named bulk. In this work, we derive the field equations of a braneworld model in a generalized gravitational theory, namely \(f(R,T)\) gravity, with \(R\) and \(T\) representing the Ricci scalar and the trace of the energy-momentum tensor, respectively. The cosmological parameters obtained from this approach are in agreement with recent constraints from type Ia supernovae data, baryon acoustic oscillations and cosmic microwave background observations, favouring such an alternative description of the universe dynamics.
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Notes
“Extra terms” when compared to standard gravity field equations.
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Acknowledgements
PHRSM would like to thank São Paulo Research Foundation (FAPESP), grant 2015/08476-0, for financial support. PHRSM is also thankful to the anonymous referee, for his/her comments, which made the mathematics of the paper more robust, yielding a more realistic cosmological model. RACC thanks to UFABC and CAPES for financial support
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Moraes, P.H.R.S., Correa, R.A.C. Braneworld cosmology in \(f(R,T)\) gravity. Astrophys Space Sci 361, 91 (2016). https://doi.org/10.1007/s10509-016-2677-4
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DOI: https://doi.org/10.1007/s10509-016-2677-4