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Tidal deformation of neutron stars from microscopic models of nuclear dynamics

机译:从核动力学微观模型的中子恒星潮汐变形

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摘要

The observation of the gravitational wave signal GW170817, consistent with emission from the inspiral of a binary neutron-star system, provided information on the tidal deformation of the participating stars. The available data may be exploited to constrain the equation of state of dense nuclear matter as well as to shed light on the underlying models describing nuclear dynamics at the microscopic level. In this paper, we compare the experimental results to the predictions of different theoretical models, based on nonrelativistic nuclear many-body theory, the relativistic field-theoretical formalism, and a more phenomenological approach constrained by observed nuclear properties. Although the precision of the available data does not allow to resolve the degeneracy of the models, our analysis shows a distinct sensitivity to the star compactness predicted by the different equations of state, which turns out to be significantly affected by relativistic boost corrections to the nucleon-nucleon potential.
机译:引力波信号GW170817的观察,与二元中子星系的励志的发射一致,提供了关于参与恒星的潮汐变形的信息。可以利用可用数据来限制密集核物质状态的方程以及在微观级别描述核动力学的底层模型上的脱光。在本文中,我们将实验结果与基于非椭圆核许多机构理论,相对论 - 理论形式主义的不同理论模型的预测,以及由观察到的核特性约束的更显现象学方法。尽管可用数据的精度不允许解决模型的退化性,但我们的分析显示了对由不同状态方程预测的星形紧凑性的分析,这结果是对核仁的相对论升压校正显着影响。 - 核酸潜力。

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