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arXiv · 2203.15225

An accurate relativistic chiral nucleon-nucleon interaction up to the next-to-next-to-leading order

Jun-Xu Lu·Yang Xiao·Chun-Xuan Wang·Li-Sheng Geng
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Abstract

We report on the construction of an accurate relativistic chiral nucleon-nucleon interaction up to the next-to-next-to-leading (NNLO) order. We compare the so-obtained neutron-proton phaseshifts with the next-to-next-to-next-to-leading order (N$^3$LO) nonrelativistic ones and we show that up to $T_\mathrm{lab.}=200$ MeV, the relativistic chiral nuclear force can describe the PWA93 phaseshifts and inelasticities as well as its N$^3$LO nonrelativistic counterparts. As a result, the relativistic chiral nuclear force can be readily used for relativistic ab initio nuclear structure, reaction, as well astrophysical studies.

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Jun-Xu Lu, Yang Xiao, Chun-Xuan Wang, Li-Sheng Geng. 2022-03-29. An accurate relativistic chiral nucleon-nucleon interaction up to the next-to-next-to-leading order. https://arxiv.org/abs/2203.15225

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