Partial-wave expansion of ΛNN three-baryon interactions in chiral effective field theory
Partial-wave expansion of ΛNN three-baryon interactions in chiral effective field theory
复制标题
DOI：
10.1103/physrevc.106.054004
复制
发表时间：
2022-08
影响因子：
3.1
通讯作者：
M. Kohno;H. Kamada;K. Miyagawa
中科院分区：
文献类型：
--
作者：
M. Kohno;H. Kamada;K. Miyagawa
给出了手征有效场论中三重子相互作用的分波展开式。其推导遵循Hebeler等人的方法。[物理。C修订版，044001(044001)]，但最终的表述更一般。也就是说，系统地处理相互作用的高阶自旋-动量结构成为可能。利用导出的公式，计算了一个$\Lambda$-重离子的折叠势。这一信息对于推断$Lambda NN$三重子力对超子的可能贡献是有价值的，这是通过复杂的Faddeev计算进行进一步研究的基础。对于超核和中子星物质的描述，对三重子力和两体相互作用的微观理解是必不可少的。
An expression of partial wave expansion of three-baryon interactions in chiral effective field theory is presented. The derivation follows the method by Hebeler et al. [Phys. Rev. C{\bf 91}, 044001 (2015)], but the final expression is more general. That is, a systematic treatment of the higher-rank spin-momentum structure of the interaction becomes possible. Using the derived formula, a $\Lambda$-deuteron folding potential is evaluated. This information is valuable for inferring the possible contribution of the $\Lambda NN$ three-baryon forces to the hypertriton as the basis of further studies by sophisticated Faddeev calculations. A microscopic understanding of $\Lambda NN$ three-baryon forces together with two-body $\Lambda N$ interactions is essential for the description of hypernuclei and neutron-star matter.