Quark mass effects on the stability of hybrid stars

  title={Quark mass effects on the stability of hybrid stars},
  author={Michael Buballa and Frederik Neumann and Micaela Oertel and Igor A. Shovkovy},
  journal={Physics Letters B},
Abstract We perform a study of the possible existence of hybrid stars with color superconducting quark cores using a specific hadronic model in a combination with an NJL-type quark model. It is shown that the constituent mass of the non-strange quarks in vacuum is a very important parameter that controls the beginning of the hadron–quark phase transition. At relatively small values of the mass, the first quark phase that appears is the two-flavor color superconducting (2SC) phase which, at… 

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