Entanglement generation in few-nucleon scattering

Inspired by a recent Letter [S. R. Beane et al., Phys. Rev. Lett. 122, 102001(2019)], the entanglement generated in elastic $S$-wave scattering of $p+{}^{3}\text{He}$ and $n+{}^3\text{H}$ is studied, where proton, neutron, ${}^{3}$He, ${}^3$H are all regarded as qubits. To deal with Coulomb interaction between proton we derive power, physical quantity that measures average process, for charged qubits within screening method. The power aforementioned two few-nucleon scatterings found to be generally much smaller than $n+p$ at low energies, corresponding cluster effective field theories possessing an enhanced approximate $\text{SU}(2)_1\otimes\text{SU}(2)_{2}$ symmetry leading order. Our study suggests generation capacities interactions nucleons light nuclei could more suppressed realistic nucleon-nucleon energies.