Using six neutron star equations of state, braneworld gravity can support the 2.5 to 2.67 solar mass object seen in GW190814 and gives a lower bound on brane tension near 2×10^37 dyne/cm^2.
The role of exterior Weyl fluids on compact stellar structures in Randall-Sundrum gravity
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In the context of the Randall-Sundrum braneworld, the minimal geometric deformation approach (MGD) is used to generate a new physically acceptable interior solution to Einstein's field equations for a spherically symmetric compact distribution. This new solution is used to elucidate the role of exterior Weyl stresses from bulk gravitons on compact stellar distributions. We found strong evidences showing that the exterior dark radiation ${\cal U}^+$ always increases both the pressure and the compactness of stellar structures, and that the exterior "dark pressure" ${\cal P}^+$ always reduces them.
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Braneworld Neutron Stars: Constraining Brane Tension with Observational Data
Using six neutron star equations of state, braneworld gravity can support the 2.5 to 2.67 solar mass object seen in GW190814 and gives a lower bound on brane tension near 2×10^37 dyne/cm^2.