慢转换对具有顺序QCD相变的混合星的影响
Impact of slow conversions on hybrid stars with sequential QCD phase transitions
摘要：
本文研究了相位转换速度对具有连续锐QCD相变的混合星性质的影响。我们认为，这些混合星具有CFL（2SC）夸克物质的内（外）核周围的强子物质。假设相位转换可以是慢的或快的，我们分析了这些对象的动力学稳定性。特别是，我们提出了我们的预测的质量半径的轮廓和基本的本征频率的混合星与顺序QCD一阶相变。我们的研究结果表明，通常的稳定性标准，即$\partial M/ \partial P_0 \geq 0$，是足够的，只有当两个转换是快速的。此外，我们表明，如果任何接口有一个缓慢的转换速度，基本的本征频率显着修改。
英文摘要：
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.
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