Brans-Dicke brane cosmology
Luis E. Mendes, Anupam Mazumdar
TL;DR
This paper explores a five-dimensional brane cosmology with a non-minimally coupled scalar field in a Jordan-Brans-Dicke framework, deriving effective 4D equations and analyzing their cosmological implications.
Contribution
It introduces a novel derivation of 4D effective field equations in a brane setup with a scalar field non-minimally coupled to gravity.
Findings
Matter evolution on the brane is non-trivially coupled to the scalar field.
The model predicts unique cosmological behaviors due to scalar field interactions.
Effective 4D equations reveal new dynamics in brane cosmology.
Abstract
A five dimensional brane cosmology with non-minimally coupled scalar field to gravity has been considered in a Jordan-Brans-Dicke frame. We derive an effective four dimensional field equations on a 3+1 dimensional brane where the fifth dimension has been assumed to have an orbifold symmetry. We have noticed that the evolution equation for the matter component stuck to the brane is non-trivially coupled to the scalar field living on the brane and the bulk. Finally we discuss some cosmological consequences of this set-up.
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