Speaker
Alexandre Santos
(Universidade Federal de Santa Catarina - Campus Curitibanos, Brazil)
Description
We investigate compact star properties within the quark meson coupling model (QMC) with a soft symmetry energy density dependence at large densities. It is shown that a softer symmetry energy gives rise to stars with less hyperons, smaller radii and larger masses, where the hyperon-meson couplings are chosen according to experimental values of the hyperon nuclear matter potentials, and possible uncertainties are considered. In addition, it is seen that the hyperon-meson couplings may also have a strong effect on the mass of the star. Fluctuations of proton over neutrons are also discussed, and the isospin content of the denser phase in the liquid-gas inhomogeneous matter in the inner crust of the star is obtained.
Primary authors
Alexandre Santos
(Universidade Federal de Santa Catarina - Campus Curitibanos, Brazil)
Constança Providência
(Centro de Física Computacional - Departamento de Física, Universidade de Coimbra, Portugal)
Debora Menezes
(Universidade Federal de Santa Catarina, Florianópolis, Brazil)
Prafulla Panda
(Department of Physics, C.V. Raman College of Engeneering, Vidya Nagar, Bhubaneswar, India)
