arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2212.05092nucl-thcond-mat.quant-gashep-ph
收藏

基于实验核子-核子散射振幅的梯图重求和研究核物质

Nuclear matter from the ladder resummation in terms of the experimental nucleon-nucleon scattering amplitudes

J. M. Alarcón, J. A. Oller

AI总结:

本文通过梯图重求和,基于实验核子-核子散射振幅,在无π接触相互作用下求解无限核物质能量密度,得到以相移和混合角表示的重整化结果,并给出对称及中子物质的每粒子能量、密度和声速,为高密度参数化提供低密度参考。

摘要:

无限核物质通过重求和我们之前在 Ann. Phys. 437, 168741 (2022) 中发展的梯图级数进行研究。在无π描述核子-核子相互作用的情况下,能量密度的主公式被显式求解于接触相互作用的情形。得到的重整化结果直接以核子-核子相移和分波振幅中的混合角表示,最高包括 G 波,并在包含更高分波时达到收敛。由梯级数给出的每粒子能量、密度和声速分别针对对称物质和中子物质给出。这种梯图重求和提供了一个严格的结果,可作为高密度下其他参数化 $\bar{\cal{E}}$ 的低密度参考。

英文摘要:

Infinite nuclear matter is studied by resuming the series of ladder diagrams based on the results developed by us in Ann. Phys. 437, 168741 (2022). The master formula for the energy density is explicitly solved for the case of contact interactions, within a pionless description of the nucleon-nucleon interactions. Renormalized results are obtained which are directly expressed in terms of the nucleon-nucleon phase shifts and mixing angles in partial-wave amplitudes up to an including $G$ waves, with convergence reached under the inclusion of higher partial waves. The energy per particle, density and sound velocity resulting from the ladder series are given for symmetric and neutron matter. This resummation of the ladder diagrams provides a rigorous result that may be used as low-density reference for other parameterizations of $\bar{\cal{E}}$ for higher densities.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑