Hybrid stars with the Dyson-Schwinger quark model
  We study the hadron-quark phase transition in the interior of neutron stars. For the hadronic sector, we use a microscopic equation of state involving nucleons and hyperons derived within the Brueckner-Hartree-Fock many-body theory with realistic two-body and three-body forces. For the description of quark matter, we employ the Dyson-Schwinger approach and compare with the MIT bag model. We calculate the structure of neutron star interiors comprising both phases and find that with the Dyson-Schwinger model, the hadron-quark phase transition takes place only when hyperons are excluded, and that a two-solar-mass hybrid star is possible only if the nucleonic equation of state is stiff enough. 
H. Chen, M. Baldo, G. F. Burgio, and H.-J. Schulze, (INFN Sezione di   Catania, Italy)
nucl-th astro-ph.SR hep-ph