论文标题
缓慢转化对具有顺序QCD相变的混合恒星的影响
Impact of slow conversions on hybrid stars with sequential QCD phase transitions
论文作者
论文摘要
在本文中，我们研究了相位转换速度对具有顺序尖锐QCD相变的混合恒星性质的影响。我们认为这些杂种恒星具有被规际物质包围的CFL（2SC）夸克物质的内部（外部）芯。假设相位转换可以缓慢或快速，我们分析了这些对象的动态稳定性。特别是，我们介绍了具有顺序QCD一阶相变的混合恒星的质量 - 拉迪乌斯曲线和基本特征频率的预测。我们的结果表明，通常的稳定性标准，即$ \部分M/ \部分P_0 \ GEQ 0 $，仅当两个转换都快速时才足够。此外，我们表明，如果任何接口的转化速度较慢，那么基本特征频率会大大修饰。
In this paper, we investigate the impact of the phase conversion speed on the properties of hybrid stars with sequential sharp QCD phase transitions. We consider that these hybrid stars possess an inner (outer) core of CFL (2SC) quark matter surrounded by hadronic matter. Assuming that the phase conversions can be slow or rapid, we analyze the dynamical stability of these objects. In particular, we present our predictions for the mass-radius profile and the fundamental eigenfrequencies of hybrid stars with sequential QCD first order phase transitions. Our results demonstrate that the usual stability criteria i.e. $\partial M/ \partial P_0 \geq 0$, is sufficient only if both conversions are rapid. Moreover, we show that if any of the interfaces has a slow conversion speed, the fundamental eigenfrequencies are significantly modified.
