论文标题
几个核散射中的纠缠产生
Entanglement generation in few-nucleon scattering
论文作者
论文摘要
受到最近一封信的启发[S. R. Beane等人，物理。莱特牧师。 122，102001（2019）]，$ p+{}^{}^{3} \ text {he} $和$ n+{}^3 \ text {h} $在proton，netron，neuton，$ {} $ at的情况下，$ n as y n ant qu at and and and and and，为了处理质子和$ {}^{3} $之间的库仑相互作用，我们得出了纠缠能力，即筛选方法中带电量子的纠缠能力，可测量散射过程产生的平均纠缠。在上述两个几个几个核子散射中，纠缠功率通常比低能能下的$ s $ - 波$ n+p $散射的功率要小得多，相应的群集有效的场理论具有增强的近似$ \ \ \ text {su}（su}（su}（su}（2）_1 _1 _1 _1 \ otimes \ otimes \ text text \ text prest and compry at s s su {2）我们的研究表明，核子与光核之间有效相互作用的纠缠产生能力比在低能量下现实的核子核子相互作用更受抑制。
Inspired by a recent Letter [S. R. Beane et al., Phys. Rev. Lett. 122, 102001(2019)], the entanglement generated in the elastic $S$-wave scattering of $p+{}^{3}\text{He}$ and $n+{}^3\text{H}$ is studied, where the proton, neutron, ${}^{3}$He, and ${}^3$H are all regarded as qubits. To deal with the Coulomb interaction between the proton and ${}^{3}$He, we derive the entanglement power, a physical quantity that measures the average entanglement generated by a scattering process, for charged qubits within the screening method. The entanglement power in the aforementioned two few-nucleon scatterings is found to be generally much smaller than that in the $S$-wave $n+p$ scattering at low energies, with the corresponding cluster effective field theories possessing an enhanced approximate $\text{SU}(2)_1\otimes\text{SU}(2)_{2}$ symmetry at leading order. Our study suggests that the entanglement generation capacities of effective interactions between nucleons and light nuclei could be more suppressed than realistic nucleon-nucleon interactions at low energies.
