Mathematics – Logic
Scientific paper
Dec 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008phrvd..78l3008o&link_type=abstract
Physical Review D, vol. 78, Issue 12, id. 123008
Mathematics
Logic
3
Fundamental Aspects Of Astrophysics, Phenomenological Quark Models, Quark Deconfinement, Quark-Gluon Plasma Production, And Phase Transitions, Nuclear Matter Aspects Of Neutron Stars
Scientific paper
The static spherically symmetric quark star structure is calculated by using an equation of state which takes into account the superconducting color-flavor locked phase of the strange quark matter. Some fundamental aspects of QCD (asymptotic freedom and confinement) are considered by means of a phenomenological description of the deconfined quark phase, namely, the density-dependent quark mass model. The effects from the strong interaction described by these models can affect the equation of state of the quark matter substantially. In this work we discuss the influence of these effects on the conventional mass-radius relationship of quark stars. Massive quark stars are found due to the stiffness of the equation of state at low densities, when reasonable values of the superconducting gap, taken as a free parameter, are used.
Duarte S. B.
Oliveira C. T. J.
Rodrigues Helena
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