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arxiv astro-ph/0608021 v1 pith:6YEF2WMX submitted 2006-08-01 astro-ph nucl-th

Hybrid protoneutron stars with the MIT bag model

classification astro-ph nucl-th
keywords equationhybridmassesmodelprotoneutronprotostarsstarsstate
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We study the hadron-quark phase transition in the interior of protoneutron stars. For the hadronic sector, we use a microscopic equation of state involving nucleons and hyperons derived within the finite-temperature Brueckner-Bethe-Goldstone many-body theory, with realistic two-body and three-body forces. For the description of quark matter, we employ the MIT bag model both with a constant and a density-dependent bag parameter. We calculate the structure of protostars with the equation of state comprising both phases and find maximum masses below 1.6 solar masses. Metastable heavy hybrid protostars are not found.

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  1. Characterizing the quark-hadron mixed phase in compact star cores : sensitivity to nuclear saturation and quark-model parameters at finite-temperature

    nucl-th 2026-05 unverdicted novelty 4.0

    The quark-hadron mixed phase width in hybrid stars is mainly controlled by effective nucleon mass and symmetry energy, with temperature reducing the width and softening the EOS while strong vector repulsion is needed ...