Strangelets at finite temperature in a baryon density-dependent quark mass model

Abstract

The properties of strangelets at finite temperature are studied within the framework of a baryon densitydependent quark mass model, where a new quark mass scaling and self-consistent thermodynamic treatment are adopted. The effects of finite volume and Coulomb energy are taken into account. Our results show that the temperature $T$, baryon number $A$, and perturbation interactions have strong influences on the properties of strangelets. It is found that the energy per baryon $M/A$ and charge-to-mass ratio ${f}_{z}$ decrease with baryon number $A$, while the mechanically stable radius $R$ and strangeness per baryon ${f}_{S}$ are increasing. For a strangelet with a fixed baryon number, we note that as temperature $T$ increases the quantities $M/A$, $R$, and ${f}_{S}$ are increasing while ${f}_{z}$ is decreasing. The effects of confinement and perturbative interactions are investigated as well by readjusting the corresponding parameters.