Quark matter nucleation with a microscopic hadronic equation of state

Domenico Logoteta, Constança Providência, Isaac Vidaña, and Ignazio Bombaci
Phys. Rev. C 85, 055807 – Published 24 May 2012

Abstract

The nucleation process of quark matter in cold (T=0) stellar matter is investigated using the microscopic Brueckner-Hartree-Fock approach to describe the hadronic phase and using the MIT bag model, the Nambu–Jona-Lasinio, and the chromodielectric models to describe the deconfined phase of quark matter. The consequences of the nucleation process for neutron star physics are outlined. Hyperonic stars are metastable only for some of the quark matter equations of state considered. The effect of a hyperonic three-body force on the metastability of compact stars is estimated, and it is shown that, except for the Nambu–Jona-Lasinio model and the MIT bag model with a large bag pressure, the other models predict the formation of hybrid stars with a maximum mass not larger than 1.62M.

  • Figure
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  • Received 26 April 2012

DOI:https://doi.org/10.1103/PhysRevC.85.055807

©2012 American Physical Society

Authors & Affiliations

Domenico Logoteta, Constança Providência, and Isaac Vidaña

  • Centro de Física Computacional, Department of Physics, University of Coimbra, PT-3004-516 Coimbra, Portugal

Ignazio Bombaci

  • Dipartimento di Fisica Enrico Fermi, Universitá di Pisa, and INFN Sezione di Pisa, Largo Bruno Pontecorvo 3, I-56127 Pisa, Italy

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Issue

Vol. 85, Iss. 5 — May 2012

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