Surface tension of strange stars mediated by a color-flavor-locked equation of state

Abstract

We investigate the surface tension of strange quark stars by making use of a color-flavor-locked (CFL) equation of state. Compact objects with anisotropic pressures provide richer systems for studying surface tension variations, and establishing physically viable ranges of parameters in maintaining hydrostatic equilibrium of quark matter at densities exceeding that of nuclear material. The strange quark mass, the QCD gap energy, and the MIT bag constant are key parameters in the CFL equation of state used, and thus feature in calculations of the surface tension.