We investigate the surface and curvature tensions of three-flavor cold quark matter in a state of electric charge neutrality and chemical equilibrium under weak interactions, employing the Nambu–Jona–Lasinio model with the inclusion of vector interactions. To account for finite-size effects we adopt the multiple-reflection expansion framework and present our results for various input parameters. Our results indicate that both surface and curvature tensions increase with heightened vector interactions and density. Furthermore, we note that the restoration of chiral symmetry in the strange quark sector leads to a modest reduction in curvature tension and a substantial increase in surface tension.

中文翻译：

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具有矢量相互作用的 SU(3)f NJL 模型中冷夸克物质的表面张力和曲率张力

我们采用包含矢量相互作用的 Nambu-Jona-Lasinio 模型，研究了弱相互作用下电荷中性和化学平衡状态下三味冷夸克物质的表面张力和曲率张力。为了考虑有限尺寸效应，我们采用多重反射扩展框架并给出各种输入参数的结果。我们的结果表明，表面张力和曲率张力都随着矢量相互作用和密度的增加而增加。此外，我们注意到奇夸克扇区中手性对称性的恢复导致曲率张力的适度降低和表面张力的大幅增加。