We have studied the mechanical and chemical instabilities as well as the liquid-gas-like phase transition in isospin asymmetric quark matter based on the NJL and the pNJL model. Areas of the mechanical instability region and the liquid-gas coexistence region are seen to be enlarged with a larger quark matter symmetry energy or in the presence of strange quarks. Our study shows that the light cluster yield ratio observed in relativistic heavy-ion collisions may not be affected much by the uncertainties of the isospin effect, and favors a smooth hadron-quark phase transition in compact stars as well as their mergers.

中文翻译：

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夸克物质不稳定性的同位旋效应

我们基于 NJL 和 pNJL 模型研究了同位旋非对称夸克物质的机械和化学不稳定性以及类液-气相变。机械不稳定区和气液共存区的面积随着夸克物质对称能的增大或奇异夸克的存在而扩大。我们的研究表明，在相对论重离子碰撞中观察到的轻星团屈服比可能不会受到同位旋效应不确定性的太大影响，并且有利于致密星中的平滑强子-夸克相变及其合并。