Regular braneworlds with nonlinear bulkfluids
Abstract
We construct a regular fivedimensional braneworld with localised gravity on a flat 3brane. The matter content in the bulk is parametrised by an analog of a nonlinear fluid with equation of state p =γ ρ^{λ} between the `pressure' p and the `density' ρ dependent on the 5th dimension. For γ negative and λ >1 , the null energy condition is satisfied and the geometry is free of singularities within finite distance from the brane, while the induced fourdimensional Planck mass is finite.
 Publication:

European Physical Journal C
 Pub Date:
 August 2021
 DOI:
 10.1140/epjc/s1005202109558y
 arXiv:
 arXiv:2106.15669
 Bibcode:
 2021EPJC...81..771A
 Keywords:

 High Energy Physics  Theory;
 General Relativity and Quantum Cosmology
 EPrint:
 37 pages, 6 figures, final version matches published one