Chiral Symmetry and the Nucleon-Nucleon Interaction

基于介子交换的现象学核子-核子(NN)势提供了对NN散射数据的高精度描述。这些势的一个缺点是它们不是从强相互作用的基本理论QCD中推导出来的。QCD的对称性保留在一种称为手征微扰的低能有效场论中。到目前为止，这样得到的手性NN势还没有提供这样的定量拟合度，它们也不适合微观核结构理论。首席调查员在开发提供高质量匹配的潜力方面具有经验。该提案包含了一项继续开发手性神经网络势的计划，直到它们给出高精度的数据拟合。准确的手征NN势将对精确的少核子研究和微观核多体理论产生重大影响。

0099444MachleidtPhenomenological nucleon-nucleon (NN) potentials, based on meson exchange, provide a high-precision description of the NN scattering data. A drawback of these potentials is that they are not derived from the fundamental theory of the strong interaction, QCD. The symmetries of QCD are retained in a low energy effective field theory termed chiral perturbation theory. The chiral NN potentials so derived do not, as yet, provide such a quantitative fit, nor are they suited for microscopic nuclear structure theory. The Principal Investigator has experience with the development of potentials that provide a high quality fit. The proposal contains a plan for continuing development of the chiral NN potentials until they give a high-precision fit to the data. An accurate chiral NN potential will have substantial impact on exact few-nucleon studies and microscopic nuclear many-body theory.