Quark-diquark equation of state and compact star structure

Details Quark-diquark equation of state and compact star structure Quark-diquark equation of state and compact star structure

2002-03-06

arxiv.org/abs/astro-ph/0203069v1

Int.J.Mod.Phys. D12 (2003) 495-508

Astronomy and Astrophysics

Astrophysics

11 pages, 5 .eps figures. submitted to Int. Jour. Mod. Phys. D

Scientific paper

10.1142/S0218271803002755

(abridged) We construct quark-diquark equations of state using the quark mass density-dependent formalism. A region inside a $2-D$ parameter space in which this matter is absolutely stable is identified. Motivated by the reported compactness of some neutron star candidates we present stellar sequences and show that the quark-diquark EOSs allow a very compact structure, even in the cases in which the diquark itself is not bound.

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