2024/01/30 by Haoyu Shang, Rongzhe Hu, Shang, Haoyu +5
Physics and Astronomy · #Quantum Chromodynamics and Particle Interactions #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies
paper · pdf · doi:10.48550/arxiv.2401.16696
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 N3LO 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 N3LO 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.