Including mesonic fluctuations beyond mean field in the quark-meson-diquark model substantially modifies the phase structure, with diquark condensation dominating at strong couplings as revealed by pole masses and the Silver-Blaze property.
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Adding vector and axial-vector mesons to the extended quark-meson diquark model produces a sufficiently stiff equation of state to support hybrid stars above 2 solar masses with quark cores at central densities of at least 3.9 times nuclear saturation density.
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Diquark Correlators and Phase Structure in the Quark-Meson-Diquark Model beyond Mean Field
Including mesonic fluctuations beyond mean field in the quark-meson-diquark model substantially modifies the phase structure, with diquark condensation dominating at strong couplings as revealed by pole masses and the Silver-Blaze property.
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Massive hybrid stars within the extended three-flavor quark-meson diquark model
Adding vector and axial-vector mesons to the extended quark-meson diquark model produces a sufficiently stiff equation of state to support hybrid stars above 2 solar masses with quark cores at central densities of at least 3.9 times nuclear saturation density.