Colour-superconducting strangelets in the Nambu--Jona-Lasinio model
Abstract
The two-flavour colour-superconducting (2SC) phase in small strangelets is studied. In order to describe the 2SC phase we use the three-flavour Nambu--Jona-Lasinio model. We explicitly take into account finite size effects by making use of the approximation for the density of states in spherical cavities called multiple reflection expansion (MRE). The thermodynamic potential for the 2SC strangelets is derived in the mean-field approximation with the help of the MRE. We found that 2SC phase survives in small strangelets with a sizable gap. Consequences for the 2SC phases are also discussed.
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