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- W3102329184 abstract "According to Padmanabhan's proposal, the difference between the surface degrees of freedom and the bulk degrees of freedom in a region of space may result in the acceleration of Universe expansion through the relation $Delta V/Delta t = N_{rm sur}-N_{rm bulk}$ where $N_{rm bulk}$ and $N_{rm sur}$ are referred to the degrees of freedom related to the matter and energy content inside the bulk and surface area, respectively cite{Pad1}. In this paper, we study the dynamical effect of the extrinsic geometrical embedding of an arbitrary four dimensional brane in a higher dimensional bulk space and investigate the corresponding degrees of freedom. Considering the modification of Friedmann equations arising from a general braneworld scenario, we obtain a correction term in Padmanabhan's relation, denoting the number of degrees of freedom related to the extrinsic geometry of the brane embedded in higher dimensional spacetime as $Delta V /Delta t=N_{rm sur}-N_{rm bulk}-N_{rm extr}$ where $N_{rm extr}$ is referred to the degree of freedom related to the extrinsic geometry of the brane while $N_{rm sur}$ and $N_{rm bulk}$ are as well as before. Finally, we study the validity of the first and second laws of thermodynamics for this general braneworld scenario in the state of thermal equilibrium and in the presence of confined matter fields to the brane with the induced geometric matter fields." @default.
- W3102329184 created "2020-11-23" @default.
- W3102329184 creator A5022130923 @default.
- W3102329184 creator A5022582192 @default.
- W3102329184 creator A5028036530 @default.
- W3102329184 creator A5036596889 @default.
- W3102329184 date "2016-06-01" @default.
- W3102329184 modified "2023-10-04" @default.
- W3102329184 title "Emergent universe in the braneworld scenario" @default.
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