Quark-diquark equation of state and compact star structure

Abstract

(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.

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

References in corpus (1)

• Towards a Mass and Radius Determination of the Nearby Isolated Neutron Star RX J185635-3754

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