引力波中强子-夸克混合相的特征
Signatures of hadron-quark mixed phase in gravitational waves
摘要：
考虑有限尺寸效应，我们计算了包含强子-夸克混合相的恒星振荡。我们发现，即使观察基模的引力波，也有可能区分恒星中是否存在密度不连续。此外，压力模式的归一化本征频率强烈依赖于恒星质量和所采用的状态方程。特别是，尽管具有标准质量$1.4M_\odot$的中子星的半径几乎与夸克物质的状态方程无关，但压力模的频率依赖于所采用的状态方程。因此，通过观测多种引力波，就有可能对物态方程作出限制。
英文摘要：
We calculate stellar oscillations including the hadron-quark mixed phase considering the finite size effects. We find that it is possible to distinguish whether the density discontinuity exists or not in the stars, even if one will observe the gravitational waves of the fundamental mode. Additionally, the normalized eigenfrequencies of pressure modes depend strongly on the stellar mass and on the adopted equation of state. Especially, in spite of the fact that the radius of the neutron star with $1.4M_\odot$, which is standard mass, is almost independent from the equation of state with quark matter, the frequencies of pressure modes depend on the adopted equation of state. Thus, via observing the many kinds of gravitational waves, it will be possible to make a restriction on the equation of state.
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