论文标题
核子机械性能的介质修饰：亚伯断层扫描案例
Medium modification of the nucleon mechanical properties: Abel tomography case
论文作者
论文摘要
我们研究了核子的重力形式因子如何在核物质上发生变化，从而强调了从三维（3D）BREIT框架到二维（2D）轻框架的亚伯转化。由于重力形式因子揭示了核子的机械结构，因此我们还检查了能量摩肌，压力和剪切力分布的培养基修饰。我们仔细检查了核子在核物质中的稳定性。为此，我们采用了中等内化的SU（2）Skyrme模型来研究这些机械量的核子，因为它提供了一个简单但清晰的框架。在此中等内改良的SU（2）Skyrme模型中，使用低能量的Pion-Nucleus散射数据和核物质的饱和性能在正常核物质密度附近，$ρ_0=55m_π^3 $进行了pionic特性的修饰。结果表明，随着核子的质量分布在培养基中的扩展，核物质中的核子如何膨胀。我们还表明，对应于质量和角动量分布在核培养基中的均方根半径增加。此功能在3D和2D情况下都保留。我们可以想象如何分布2D平面中核内部的强力场，并说明这些力在核物质中如何发生变化。
We investigate how the gravitational form factors of the nucleon undergo changes in nuclear matter, emphasizing the Abel transformation from the three-dimensional (3D) Breit frame to the two-dimensional (2D) light-front frame. Since the gravitational form factors reveal the mechanical structure of the nucleon, we examine also the medium modifications of the energy-momentum, pressure, and shear-force distributions. We scrutinize the stabilities of the nucleon in nuclear matter. For this purpose, we employ the in-medium modified SU(2) Skyrme model to study these mechanical quantities of the nucleon, since it provides a simple but clear framework. In this in-medium modified SU(2) Skyrme model, the modification of pionic properties is performed by using low-energy pion-nucleus scattering data and the saturation properties of nuclear matter near the normal nuclear matter density, $ρ_0=0.5m_π^3$. The results reveal how the nucleon swells in nuclear matter as the mass distribution of the nucleon is broadened in medium. We also show that the mean square radii corresponding to the mass and angular momentum distributions increase in nuclear medium. This feature is kept both in 3D and 2D cases. We visualize how the strong force fields inside the nucleon in the 2D plane are distributed and illustrate how these forces undergo change in nuclear matter.
