Quark-diquark equation of state and compact star structure
G. Lugones, J. E. Horvath
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.
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