Physics Department, University of Trento, via Sommarive 14, I-38123 Trento, Italy and Trento Institute for Fundamental Physics and Applications, INFN-TIFPA, I-38123 Trento, Italy.
ECT*, Villa Tambosi, I-38123 Villazzano (Trento), Italy.
Phys Rev Lett. 2014 Jun 6;112(22):221103. doi: 10.1103/PhysRevLett.112.221103.
We present fully nonperturbative quantum Monte Carlo calculations with nonlocal chiral effective field theory (EFT) interactions for the ground-state properties of neutron matter. The equation of state, the nucleon chemical potentials, and the momentum distribution in pure neutron matter up to one and a half times the nuclear saturation density are computed with a newly optimized chiral EFT interaction at next-to-next-to-leading order. This work opens the way to systematic order by order benchmarking of chiral EFT interactions and ab initio prediction of nuclear properties while respecting the symmetries of quantum chromodynamics.
我们提出了完全非微扰的量子蒙特卡罗计算，使用非局域手征有效场理论（EFT）相互作用来研究中子物质的基态性质。我们使用最新优化的次领头阶手征 EFT 相互作用来计算了纯中子物质的状态方程、核子化学势以及在核饱和密度的 1.5 倍以上的动量分布。这项工作为手征 EFT 相互作用的系统逐阶基准测试以及在尊重量子色动力学对称性的情况下对核性质的从头预测铺平了道路。
