Mass radius relation of compact stars in the braneworld
arXiv:1403.1099 · doi:10.1088/1475-7516/2014/08/047
Abstract
The braneworld scenario, based on the fact that the four dimension space-time is a hyper-surface of a five dimensional manifold, was shown to deal in a satisfactory way with the hierarchy problem. In this work we study macroscopic stellar properties of compact stars from the braneworld point of view. Using neutron star equations of state, we test the possibility of extra dimensions by solving the brane Tolman-Oppenheimer-Volkoff equations obtained for three kinds of possible compact objects: hadronic, hybrid and quark stars. By comparing the macroscopic solutions with observational constraints, we establish a brane tension lower limit and the value for which the Tolman-Oppenheimer-Volkoff equations in the braneworld converge to the usual Tolman-Oppenheimer-Volkoff equations.
15 pages, 5 figures, 4 tables, to appear in JCAP
References in corpus (10)
- Shapiro delay measurement of a two solar mass neutron star
- A Massive Pulsar in a Compact Relativistic Binary
- Constraints on neutron star radii based on chiral effective field theory interactions
- Fermion localization and resonances on two-field thick branes
- Fermion localization on thick branes
- Fermions on Thick Branes in the Background of Sine-Gordon Kinks
- Influence of the hadronic equation of state on the hadron-quark phase transition in neutron stars
- Fermion localization on two-field thick branes
- A Transfer Matrix Method for Resonances in Randall-Sundrum Models III: An analytical comparison
- The importance of the mixed phase in hybrid stars built with the Nambu-Jona-Lasinio model