arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1807.02848nucl-thnucl-ex
收藏

具有半局部坐标空间正则手征二、三体力的少核子和多核子系统

Few- and many-nucleon systems with semilocal coordinate-space regularized chiral two- and three-body forces

E. Epelbaum, J. Golak, K. Hebeler, T. Hüther, H. Kamada, H. Krebs, P. Maris, U. -G. Meißner, A. Nogga, R. Roth, R. Skibiński, K. Topolnicki, J. P. Vary, K. Vobig, H. Witała

摘要:

本文在手征有效场论中,利用半局域坐标空间正则化的二核子和三核子力,对质量范围A=3-16的轻核基态和低激发态进行了完整的计算.结果表明,由核子-氘核弹性散射中的束缚能和微分截面极小值可以可靠地确定以该量级进入三核子力的低能常数.包括三核子力被发现,以改善与大多数被认为是可观的数据的协议。

英文摘要:

We present a complete calculation of nucleon-deuteron scattering as well as ground and low-lying excited states of light nuclei in the mass range A=3-16 up through next-to-next-to-leading order in chiral effective field theory using semilocal coordinate-space regularized two- and three-nucleon forces. It is shown that both of the low-energy constants entering the three-nucleon force at this order can be reliably determined from the triton binding energy and the differential cross section minimum in elastic nucleon-deuteron scattering. The inclusion of the three-nucleon force is found to improve the agreement with the data for most of the considered observables.

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。

↑