标题： 在大质量标量-张量理论中访问双中子星波形的普适关系 显示英文标题

标题： Accessing universal relations of binary neutron star waveforms in massive scalar-tensor theory

摘要： 我们研究了文献中在广义相对论框架下提出的将潮汐变形与引力波波形特征和/或单个中子星性质联系起来的准普遍关系，在大质量Damour-Esposito-Farese型标量张力引力中会受到怎样的影响。 为此，我们系统地对约120次具有不同标量耦合常数的双中子星合并进行了数值相对论模拟。 尽管只采用了三种中子星方程状态，数据集中仍可以观察到普遍性的明显破坏。 除了展示出在替代引力理论中构建准普遍关系的困难外，我们还简要比较了非广义相对论物理对波形特征的影响以及由一阶或交叉量子色动力学相变引起的那些影响。 显示英文摘要

摘要： We investigate how the quasi-universal relations connecting tidal deformability with gravitational waveform characteristics and/or properties of individual neutron stars that were proposed in the literature within general relativity would be influenced in the massive Damour-Esposito-Farese-type scalar-tensor gravity. For this purpose, we systematically perform numerical relativity simulations of ~120 binary neutron star mergers with varying scalar coupling constants. Although only three neutron-star equations of state are adopted, a clear breach of universality can be observed in the data sets. In addition to presenting difficulties in constructing quasi-universal relations in alternative gravity theories, we also briefly compare the impacts of non-general-relativity physics on the waveform features and those due to the first order or cross-over quantum chromodynamical phase transition.