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arXiv · 1110.4708

Compact stars within an asy-soft quark-meson-coupling model

Prafulla K. Panda·Alexandre M. S. Santos·Débora P. Menezes·Constança Providência
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Abstract

We investigate compact star properties within the quark meson coupling model (QMC) with a soft symmetry energy density dependence at large densities. In particular, the hyperon content and the mass/radius curves for the families of stars obtained within the model are discussed. The hyperon-meson couplings are chosen according to experimental values of the hyperon nuclear matter potentials, and possible uncertainties are considered. It is shown that a softer symmetry energy gives rise to stars with less hyperons, smaller radii and larger masses. Hyperon-meson couplings may also have a strong effect on the mass of the star.

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Prafulla K. Panda, Alexandre M. S. Santos, Débora P. Menezes, Constança Providência. 2011-10-21. Compact stars within an asy-soft quark-meson-coupling model. https://doi.org/10.1103/physrevc.85.055802

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