论文标题
非对称核物质中的核能动量差距
Nucleon momentum gap in asymmetric nuclear matter
论文作者
论文摘要
在半个多世纪的时间里，核子被认为是在核中连续移动的。最近的电子散土机实验表明，在较重的核中约有20美元$ \ sim $ 25 \％的核子参与中子 - 普罗顿短距离相关性。因此，核中的核子具有异常行为，与非相互作用费米气体中的核行为不同。在富含中子的核中，在费米动量周围，中子蛋白proton的短距离相关性导致质子动量分布的动量差距，这是由Pioninic实验数据在经常支持的。同样，富含质子的核中也应该存在中子动量差距。核能动量间隙被认为具有从颗粒物理学到中子恒星以及超冷原子气体的研究中具有深远而广泛的意义。
For more than half a century, nucleons are considered to move continuously in the nuclei. Recent electron-scattering experiments indicate about 20$\sim$25\% nucleons in heavier nuclei are involved in the neutron-proton short-range correlations. Nucleons in the nuclei thus have abnormal behavior unlike those in the non-interaction fermi gas. In the neutron-rich nuclei, around the Fermi momentum, the neutron-proton short-range correlations lead to a momentum gap in the proton momentum distribution, which is circumstantially supported by the pionic experimental data. Likewise, there should also be a neutron momentum gap in the proton-rich nuclei. Nucleon momentum gap is thought to have profound and extensive implications in the studies ranging from particle physics to neutron stars as well as ultra-cold atomic gases.
