Friedmann equations in braneworld scenarios from emergence of cosmic space

Recently, it was argued that the spacetime dynamics can be understood by calculating the difference between the degrees of freedom on the boundary and in the bulk in a region of space. In this Letter, we apply this new idea to braneworld scenarios and extract the corresponding Friedmann equations of...

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Bibliographic Details
Published in:Physics letters. B 2013-10, Vol.726 (1-3), p.23-27
Main Authors: Sheykhi, A., Dehghani, M.H., Hosseini, S.E.
Format: Article
Language:English
Subjects:
Boundaries
Branes
Curvature
Degrees of freedom
Dynamics
Elementary particles
Mathematical analysis
Universe
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Summary:Recently, it was argued that the spacetime dynamics can be understood by calculating the difference between the degrees of freedom on the boundary and in the bulk in a region of space. In this Letter, we apply this new idea to braneworld scenarios and extract the corresponding Friedmann equations of (n−1)-dimensional brane embedded in the (n+1)-dimensional bulk with any spacial curvature. We will also extend our study to the more general Gauss–Bonnet braneworld with curvature correction terms on the brane and in the bulk, and derive the dynamical equation in a nonflat Universe.
ISSN:0370-2693
1873-2445
DOI:10.1016/j.physletb.2013.08.035