论文标题
带有晶格QCD模拟的接触术语的一杆交换潜力
The one-pion-exchange potential with contact terms from lattice QCD simulations
论文作者
论文摘要
从一杆交换和接触术语中获得的pion-mas依赖性核子核子（$ nn $）潜力是从两核子系统的最新晶格QCD模拟中获得的，两核系统的最新晶格QCD模拟采用了领先顺序（LO）的形式（LO）$ nn $从手动有效现场理论中的电位，因此被命名为本工作中的LO HAIRAL潜力。我们首次将接触术语的系数和截止动量的系数拟合，这是通过将HALQCD合作结果与各种Pion Mose产生的$^1S_0 $和$^3S_1 $通道的相位转移从468.6美元的$ 468.6 $ MEV生成的。 $^1S_0 $和$^3S_1 $通道中的低能常数变得较弱，并互相接近较大的pion质量。这些手性电位应用于Brueckner-Hartree-fock方法中的对称核和纯中子物质。但是，目前，我们尚无lattice QCD模拟提供的$ p $ - 波$ nn $交互的信息，以完整描述核事项。我们的结果将通过控制拓扑效应的贡献并阐明强相互作用在复杂系统中的手性对称性的作用来增强核结构和核物质的发展。
The pion-mass-dependent nucleon-nucleon ($NN$) potentials in term of one-pion exchange and contact terms are obtained from the latest lattice QCD simulations of two-nucleon system, which employ the forms of leading order (LO) $NN$ potential from the chiral effective field theory and thus are named as the LO chiral potential in this work. We extract the coefficients of contact terms and cut-off momenta in these potentials, for the first time, by fitting the phase shifts of $^1S_0$ and $^3S_1$ channels generated by the results of HALQCD collaboration with various pion masses from $468.6$ MeV to $1170.9$ MeV. The low-energy constants in the $^1S_0$ and $^3S_1$ channels become weaker and approach each other for larger pion masses. These LO chiral potentials are applied to symmetric nuclear and pure neutron matter within the Brueckner-Hartree-Fock method. At this moment, however, we do not have yet the information of the $P$-wave $NN$ interaction to be provided by the lattice QCD simulations for full description of nuclear matter. Our results will enhance the development of nuclear structure and nuclear matter by controlling the contribution of the pionic effect and illuminate the role of chiral symmetry of the strong interaction in complex system.
