Regular braneworlds with nonlinear bulk-fluids

doi:10.1140/epjc/s10052-021-09558-y

Regular braneworlds with nonlinear bulk-fluids

2021-08-26

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Ifigeneia Klaoudatou *

DOI：10.1140/epjc/s10052-021-09558-y

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We construct a regular five-dimensional brane-world with localised gravity on a flat 3-brane. The matter content in the bulk is parametrised by an analog of a non-linear fluid with equation of state p = gamma rho(lambda) between the 'pressure' p and the 'density' rho dependent on the 5th dimension. For. negative and lambda > 1, the null energy condition is satisfied and the geometry is free of singularities within finite distance from the brane, while the induced four-dimensional Planck mass is finite.

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Regular braneworlds with nonlinear bulk-fluids

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