Hadron-Quark Phase Transitions in Hyperon Stars

Abstract

We compare the Gibbs and Maxwell constructions for the hadron-quark phase transition in neutron and protoneutron stars, including interacting hyperons in the confined phase. We find that the hyperon populations are suppressed, and that neutrino trapping shifts the onset of the phase transition. The effects on the (proto)neutron star maximum mass are explored.

11 pages, 3 figures

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• PNJL model at zero temperature: three-flavor case
• Hybrid stars within the framework of the Sigma-Omega-Rho model combined with the MIT and NJL models