Neutron stars in the braneworld within the Eddington-inspired
  Born-Infeld gravity
  We propose the disappearance of "the hyperon puzzle" in neutron star (NS) by
invoking two new-physics prescriptions: modified gravity theory and braneworld
scenario. By assuming that NS lives on a $3$-brane within a $5d$ empty AdS
bulk, gravitationally governed by Eddington-inspired Born-Infeld (EiBI) theory,
the field equations can be effectively cast into the usual Einstein's with
"apparent" anisotropic energy-momentum tensor. Solving the corresponding
brane-TOV equations numerically, we study its mass-radius relation. It is known
that the appearance of finite brane tension $\lambda$ reduces the compactness
of the star. The compatibility of the braneworld results with observational
constraints of NS mass and radius can be restored in our model by varying the
EiBI's coupling constant, $\kappa$. We found that within the
astrophysically-accepted range of parameters ($0<\kappa<6\times10^6\text{m}^2$
and $\lambda\gg1~ \text{MeV}^4$) the NS can have mass $\sim2.1~ \text{M}_\odot$
and radius $\sim10$ km.
