标题： 中子星中超子谜题的一个新解决方案 显示英文标题

标题： A novel solution to the hyperon-puzzle in neutron stars

摘要： 中子星提供了一个研究高度压缩强子物质的实验和理论机会。然而，在中子星密度下出现了所谓的“超子难题”。超子与其他粒子共存时会软化状态方程，许多广泛接受的模型无法再现精确的大质量中子星观测值。在这里，我们提出了一种新的机制，通过考虑超子介质势能的显式动量依赖性来保持高密度状态下超子的状态刚度。我们的方法修改了传统的奇异数阈值条件，并在高密度物质中的超子上产生了新的阈值效应。我们在非线性导数模型中演示了这些效应，该模型基于经验性和微观研究引入了重子动量相关的场。结果表明，即使是软的动量依赖性奇异数场也禁止它们在中子星物质中的出现。由非线性导数方法建模的奇异数势能的一般动量依赖性对于解决中子星中超子难题这一长期存在的问题至关重要。 显示英文摘要

摘要： Neutron stars offer a great opportunity to study highly compressed hadronic matter experimentally and theoretically. However, the so-called hyperon-puzzle arises at neutron star densities. The hyperon coexistence with other particles in compressed matter softens the equation of state and many widely-accepted models fail to reproduce precise observations of large neutron star masses. Here, we propose a novel mechanism to retain the stiffness of the high density state with hyperons by considering the explicit momentum dependence of their in-medium potentials. Our approach modifies conventional strangeness threshold conditions and generates new threshold effects on hyperons in high-density matter. We demonstrate these effects within the Non-Linear Derivative model, which incorporates baryon momentum-dependent fields based on empirical and microscopic studies. It turns out that even soft momentum-dependent strangeness fields do prohibit their populations in neutron star matter. The generic momentum dependence of strangeness potentials, as modeled by the non-linear derivative approach, is crucial for resolving the long-standing hyperon-puzzle in neutron stars.