We report the results of a study aimed at inferring direct information on the repulsive three-nucleon potential $V_{ijk}^R$—driving the stiffness of the nuclear matter equation of state at supranuclear densities—from astrophysical observations. Using a Bayesian approach, we exploit the measurements of masses, radii, and tidal deformabalities performed by the NICER satellite and the LIGO/Virgo Collaborations as well as the mass of the heaviest observed pulsar to constrain the strength of $V_{ijk}^R$. The baseline of our analysis is the widely employed nuclear Hamiltonian comprising the Argonne $v_{18}$ nucleon-nucleon potential and the Urbana IX model of the three-nucleon potential. The numerical results, largely determined by the bound on the maximum mass, suggest that existing and future facilities have the potential to provide valuable new insight into microscopic nuclear dynamics at supranuclear densities.

中文翻译：

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用多信使数据约束三核子力

我们报告了一项旨在推断有关排斥性三核子势的直接信息的研究结果 ${伏}_{\mathrm{一世}j克}^{\mathrm{电阻}}$——根据天体物理观测，在超核密度下驱动核物质状态方程的刚度。使用贝叶斯方法，我们利用 NICER 卫星和 LIGO/Virgo Collaborations 进行的质量、半径和潮汐变形测量以及观测到的最重脉冲星的质量来限制${伏}_{\mathrm{一世}j克}^{\mathrm{电阻}}$. 我们分析的基线是广泛使用的核哈密顿量，包括 Argonne$v_{18}$核子-核子势和三核子势的 Urbana IX 模型。数值结果主要由最大质量的界限决定，表明现有和未来的设施有可能为超核密度下的微观核动力学提供有价值的新见解。