论文标题
部分可观测时空混沌系统的无模型预测
Correlations among neutron-proton and neutron-deuteron elastic scattering observables
论文作者
论文摘要
我们采用两种模型的核子核素力模型：Ope-Gaussian以及手性N4LO和N4LO+与动量空间中半局部正则化的相互作用，以研究两种努氏和三核子弹性散射可观察的相关性。这些模型包含许多免费参数，其值和协方差矩阵从拟合到两个核子数据进行评估。这种参数的详细知识使我们能够使用各种统计生成的参数，这些电位的许多版本，然后将它们应用于两种和三核子散射，以对高达200 MEV的反应能量进行各种可观察到的预测。这允许对两个核子和三核观测值之间的相关性进行系统分析，并基于相对较大的预测样本。我们发现，中子 - 普罗顿和中子 - 脱氧于系统中的大多数可观察力是不相关的，但是有例外显示强相关性，这取决于反应能量和散射角。此信息可能有助于精确固定两个核子和三核力的力的自由参数，以及理解潜在参数和可观察到的依赖关系和相关性。
We employ two models of the nucleon-nucleon force: the OPE-Gaussian as well as the chiral N4LO and N4LO+ interactions with semilocal regularization in momentum space to study correlations among two-nucleon and three-nucleon elastic scattering observables. These models contain a number of free parameters whose values and covariance matrices are evaluated from a fit to the two-nucleon data. Such detailed knowledge of parameters allows us to create, using various sets of statistically generated parameters, numerous versions of these potentials and next apply them to two- and three-nucleon scattering to make predictions of various observables at the reaction energies up to 200 MeV. This permits a systematic analysis of correlations among two-nucleon and three-nucleon observables, basing on a relatively big sample of predictions. We found that most observables in neutron-proton and neutron-deuteron systems are uncorrelated, but there are exceptions revealing strong correlations, which depend on the reaction energy and scattering angle. This information may be useful for precise fixing free parameters of two-nucleon and three-nucleon forces and for understanding dependencies and correlations between potential parameters and observables.
