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arXiv · 2401.16696

Properties of chiral nucleon-nucleon interaction at N$^3$LO with high cutoffs studied by local projection

Haoyu Shang·Rongzhe Hu·Junchen Pei·Furong Xu
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Abstract

The chiral nucleon-nucleon ($NN$) interaction at high cutoffs has been plagued by the presence of spurious bound states. In this work, the chiral $NN$ interaction at N$^3$LO is studied by the local projection method as the cutoff increases. The evolution of short-range behaviors of pion-exchange interactions and contact interactions is intuitively demonstrated. The $P$-channel potentials toward high cutoffs appear to be erratic at short ranges to compromise with phase shifts, while such erratic behaviors can be avoided in $S$ and $D$ channels. Furthermore, a chiral $NN$ interaction at N$^3$LO is studied at a cutoff of 700 MeV. The properties of deuteron and triton are testified with this interaction. Such a hard interaction is expected to provide an alternative choice for studies of short-range correlations and high density nuclear matter.

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Haoyu Shang, Rongzhe Hu, Junchen Pei, Furong Xu. 2024-01-30. Properties of chiral nucleon-nucleon interaction at N$^3$LO with high cutoffs studied by local projection. https://arxiv.org/abs/2401.16696

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