Study on the quantum features of nuclear matter based on the non-perturbed

基于非微扰的核物质量子特征研究

• 批准号: 08640402
• 负责人: NAKANO Masahiro
• 金额: $ 1.02万
• 依托单位: University of Occupational and Environmental Health (1997-1998)University Occupational and Environmental Health, School of Nursing and Medical Technology (1996)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08640402/
• 关键词: Relatiruistic Field Theory; higher correlation; nuclear matter; medium effect; meson self-energy; Renormalization; optical potential; particle-holeexcitation; リングダイヤグラム; NSD Method; non-nucleonic自由度; リング ダイヤグラム; cutoff field theory

We have developed the relativistic field theoretic treatment of the nuclear matter. The nuclear Schwinger-Dyson (NSD) formalism is presented for an application to nuclear atter. The NSD formalism consists of coupled Dyson equations of a nucleon and mesons. Since it includes meson self-energies in a non-perturbative way, higher order correlation beyond the Hartree-Fock approximation are taken into account. NSD formalism is one of the non-perturbative methods, it is considered to be suitable for strongly interacting system like nuclei. When we adopts the bare-vertex approximation, the NSD sum up the ring type diagrams, which stands for the particle-hole pair excitations.The NSD has been applied to many phenomena of nuclear matter. Studies are done on the effects of the ring diagrams in nuclear binding energy, incompressibility of nuclear matter, the optical(especially imaginary part) potentials, mean free path in nuclear matter, and quark condensation problem from nuclear side.We especially have developed the treatment of the meson propagator which do not include the unphysical components, while it is mixed in the traditional treatment. Further we have studied the renormalization method in finite density on the basis of the renormalization group method, by which we predicted the meson mass in nuclear matter.These research results are issued in 34 papers, 68 oral talks(including 5 international conference).

我们已经开发了对核问题的相对论领域理论处理。提出了核Schwinger-dyson（NSD）形式主义，用于应用核试剂。 NSD形式主义由核子和介子的dyson方程组成。由于它以非扰动方式包括介子自我能力，因此考虑了哈特里折叠近似以外的高阶相关性。 NSD形式主义是非扰动方法之一，被认为适用于像核等强相互作用的系统。当我们采用裸露的近似值时，NSD将环类图列为代表粒子孔对激发的图表。NSD已应用于许多核物质现象。对环图在核结合能，核物质的不可压缩性，光学（尤其是想象中的）电势，核物质的平均自由路径以及核方面的夸克凝结问题的影响进行了研究。我们特别开发了对梅森传播剂的处理，这些媒体不包括非物质成分，虽然是在传统治疗中混合的，但它不包括非物质成分。此外，我们根据重新归一化的方法研究了有限密度的重新归一化方法，通过该方法，我们预测了核物质中的介子质量。这些研究结果是在34篇论文，68次口头谈判中发出的（包括5次国际会议）。

项目成果

Liu, L.・Nakano, M.・et al.: "NN DELTAN,DELTAN excitation for the pion propagator in nuclear matter" Physical Review C. 56(2). 800-803 (1997)

Liu, L.・Nakano, M.・等人：“NN DELTAN，核物质中π介子传播子的DELTAN激发”物理评论C. 800-803 (1997)。

Nakano M., et al.: "Quark condensate in nuclear matter based on nuclear Schwinger-Dyson for malism" Physical Review C. 55・3. 1577-1579 (1997)

Nakano M.等人：“基于核Schwinger-Dyson for malism的核物质中的夸克凝聚”物理评论C.55・3（1997）。

M.Nakano et al: "Incompressibility of nuclear matter, and Coulomb and volume-symmetry" physical Review C. 53・5. 2542-2545 (1996)

M.Nakano 等：“核物质的不可压缩性、库仑和体积对称性”物理评论 C. 2542-2545 (1996)。

M.Nakano et al: "Nucleon Free Mean Path in Nuclear Matter based on NSD Formalisim" Progress of Theoretical Physies. 96,1. 179-189 (1996)

M.Nakano 等人：“基于 NSD Formalisim 的核物质中的核子自由平均路径”理论物理学进展。

Nakano M., et al.: "Meson self-energies calculated by the relativistie particle-hole-autiparticle representation" Physical Review C. 56・6. 3287-3294 (1997)

Nakano M.等人：“通过相对论粒子-空穴-自粒子表示计算的介子自能”物理评论C.56・6（1997）。