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Effects of a flavor singlet vector interaction in the Polyakov–Nambu–Jona-Lasinio (PNJL) Model are studied in combination with the axial U(1) breaking Kobayashi–Maskawa–ʼt Hooft interaction, using an improved, consistent cutoff scheme. We confirm that the first-order chiral phase transition at moderate baryon chemical potentials and its critical point, a generic feature of NJL-type models without...