标题： 大质量标量-张量理论中的双星系统：有效场论下的次leading阶引力波相位 显示英文标题

标题： Binary systems in massive scalar-tensor theories: Next-to-leading order gravitational wave phase from effective field theory

摘要： 中子星双星及其相关的引力波信号促进了广义相对论的精确检验。 因此，如果探测到的引力波波形与广义相对论有偏差，这将是新物理存在的明确标志，形式上包括额外的力、暗物质粒子或额外的引力自由度。 为了能够探测新理论，需要精确了解预期的波形。 在我们的工作中，我们通过在广义相对论中增加一个额外的、有质量的标量场来考虑一个通用设置。 然后，我们利用有效的场理论方法计算了圆轨道双星系统的旋近动力学，并详细介绍了计算框架。 最后，我们在后牛顿展开的次领头阶和标量部分参数（如标量电荷）的领头阶中推导了引力波信号修改后的TaylorF2相位。 由于我们模型无关的方法，我们的结果可以很容易地适应各种新物理情景，包括修改的引力理论和标量暗物质模型。 显示英文摘要

摘要： Neutron star binaries and their associated gravitational wave signal facilitate precision tests of General Relativity. Any deviation of the detected gravitational waveform from General Relativity would therefore be a smoking gun signature of new physics, in the form of additional forces, dark matter particles, or extra gravitational degrees of freedom. To be able to probe new theories, precise knowledge of the expected waveform is required. In our work, we consider a generic setup by augmenting General Relativity with an additional, massive scalar field. We then compute the inspiral dynamics of a binary system, for circular orbits, by employing an effective field theoretical approach, while giving a detailed introduction to the computational framework. Finally, we derive the modified TaylorF2 phase of the gravitational wave signal at next-to-leading order in the post-Newtonian expansion, and leading order in the parameters of the scalar sector, such as the scalar charge. As a consequence of our model-agnostic approach, our results are readily adaptable to a plethora of new physics scenarios, including modified gravity theories and scalar dark matter models.