Surface tension and curvature energy of quark matter in the NJL model
G. Lugones, A. G. Grunfeld, M. Al Ajmi
TL;DR
This paper investigates the surface tension and curvature energy of three-flavor quark matter using the NJL model, considering color superconductivity and finite size effects, with implications for hybrid star structure.
Contribution
It introduces a comprehensive calculation of surface tension and curvature energy in quark matter including color superconductivity and finite size effects within the NJL model.
Findings
Large surface tension values disfavor mixed phase formation in hybrid stars.
Finite size effects significantly influence quark matter properties.
Color superconductivity impacts the stability of quark matter phases.
Abstract
In this paper we study the surface tension and the curvature energy of three-flavor quark matter in equilibrium under weak interactions within the Nambu-Jona-Lasinio model. We include the effect of color superconductivity and describe finite size effects within the multiple reflection expansion (MRE) framework. Our calculations result in large values of the surface tension which disfavor the formation of mixed phases at the hadron-quark inter-phase inside a hybrid star.
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