Surface Energy Influence On The Properties Of Strangelets In The Quasiparticle Model

The quasiparticle model has been used to investigate the strange quark matter together with effective masses of u, d, s quarks in high density at high temperature. At the same time, many thermodynamic treatment methods have been developed by researchers. In this article, we investigate the properties of strangelets including finite-size effects with an extended quark quasiparticle model, where quark masses scale is derived by from the zero momentum limit of the dispersion relations following from an effective quark propagator obtained from resumming one-loop self-energy diagrams. Achemical potential and radius-dependent effective bag quantity is derived. We find that strange quark matter and/orstrangelets still have the chance to be metastable or absolutely stable. The stable radius of a strangelet in the present model is smaller than, but comparable with that of the corresponding nucleus with the same baryon number, which might be relevant for the analysis of the strangelet propagation and detection. The influence of the model parameters on the stability of strangelets is discussed.We calculate the effective bag function with a running coupling constant. Considering the medium effects, the surface tension should be redefined with an additional term described by the surface term of the bag function. With the increasing baryon number of stable strangelets, it is found that the coupling strength becomes stronger while the surface tension decreases in the vicinity of35MeV fm-2for strangelets of the baryon number greater than103. The comparison with the bag model is shown and the distinction for smaller strangelets is very clear.