Hybrid stars with the Dyson-Schwinger quark model

Details Hybrid stars with the Dyson-Schwinger quark model Hybrid stars with the Dyson-Schwinger quark model

2011-07-13

arxiv.org/abs/1107.2497v2

Phys. Rev. D 84, 105023 (2011)

Physics

Nuclear Physics

Nuclear Theory

10 pages, 8 figures

Scientific paper

10.1103/PhysRevD.84.105023

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.

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