The effective coupling constants including isoscalar and mesons and isovector and mesons in the rmf are extracted from the dbhf results in symmetric and asymmetric nuclear matter . two sets of effective interactions in the rmf approach are deduced by imposing a condition, where the dbhf scalar and . vector self-energy or scalar self-energy and binding energy per nucleon at each density and asymmetry parameter are reproduced, respectively 为了使我们提取的有效相互作用能够准确地再现出dbhf计算的核状态方程以及密度依赖的不对称能，我们采用第二种万法提取有效介子核子耦合常数，即要求在对称核物质中，每个密度处ilif计算出的标量自能及总结合能与dbhf给出的标量自能及总结合能一致，提取出。
The effective coupling constants including isoscalar and mesons and isovector and mesons in the rmf are extracted from the dbhf results in symmetric and asymmetric nuclear matter . two sets of effective interactions in the rmf approach are deduced by imposing a condition, where the dbhf scalar and . vector self-energy or scalar self-energy and binding energy per nucleon at each density and asymmetry parameter are reproduced, respectively 为了使我们提取的有效相互作用能够准确地再现出dbhf计算的核状态方程以及密度依赖的不对称能，我们采用第二种万法提取有效介子核子耦合常数，即要求在对称核物质中，每个密度处ilif计算出的标量自能及总结合能与dbhf给出的标量自能及总结合能一致，提取出。
The contribution to the giant resonances from the currents of vector mesons are also examined, it shows that currents of vector mesons play an important role in collective giant resonances . by studying the properties of collective multipole excitations of nuclei, a general conclusion is that those effective lagrangians recently developed can well describe not only the nuclear ground state properties of finite nuclei, stable and unstable ones up to the nuclei drip lines, but also the collective excited states and giant resoancnes in doubly closed shell nuclei 通过对核的电多极巨共振性质的研究，我们发现现有的这些非线性的有效相互作用不但能够很好地描述有限核的基态性质，包括球形和变形核以及远离稳定线核，而且对一些双满壳核的集体激发态和巨共振性质也能进行合理地解释，包括巨共振峰的位置和中心能量。
The contribution to the giant resonances from the currents of vector mesons are also examined, it shows that currents of vector mesons play an important role in collective giant resonances . by studying the properties of collective multipole excitations of nuclei, a general conclusion is that those effective lagrangians recently developed can well describe not only the nuclear ground state properties of finite nuclei, stable and unstable ones up to the nuclei drip lines, but also the collective excited states and giant resoancnes in doubly closed shell nuclei 通过对核的电多极巨共振性质的研究，我们发现现有的这些非线性的有效相互作用不但能够很好地描述有限核的基态性质，包括球形和变形核以及远离稳定线核，而且对一些双满壳核的集体激发态和巨共振性质也能进行合理地解释，包括巨共振峰的位置和中心能量。
We further find that anti-flow appears at certain large impact parameter, which seems to be more sensitive to 2 and might provide more definite information of the magnitude of 2 . the absorption effect of k-mesons is also studied, we find although there exists strong k-absorption, k-spectrum can still contain the messages of at " in nuclear medium 接着我们又研究了k~-介子的吸收问题，发现虽然有强烈的k~-吸收存在，其能谱在不太重的核系统的非中心碰撞中仍显示出对为的依赖，有可能提供k在核介质中性质的知识。
The nucleon dbhf self-energy in the nuclear medium, therefore, can be calculated with the g matrix in the relativistic hartree-fock approximation . with the calculated nucleon self-energy in the dbhf, we extract nucleon effective interactions hi the framework of the relativistic mean field theory ( rmf ), which contains the effect of the nucleon-nucleon short-range correlation and information of the isospin structure . applying the effective interaction, which is composed of density dependent meson-nucleon coupling constants, we study the properties of finite nuclei and come to some useful conclusions 本文应用相对论dirac-brueckner-hartree-fock(dbhf)方法，利用新的g矩阵分解方式g=v+g，用g矩阵在相对论hartree-fock近似下，即等效的dbhf方法，系统地讨论了对称、不对称核物质及中子物质的性质，利用对称及不对称核物质中自能的dirac结构，我们提取出含有核子-核子短程关联效应和同位旋结构信息的有效相互作用介子耦合常数，并对有限核的性质做了详细的讨论，得到不少有意义的结果。
In high energy nucleus-nucleus collisons, cc pairs are produced through short-distance scattering process among partons . after the point-like cc pairs form, they can be dissociated by partonic and final hadronic matter . not only mesons but also baryons in final haronic matter contribute to the dissociation of cc 在高能核一核相互作用中，由于部分子间的短程散射过程诱导产生cc对，这些类点cc对形成后，离解的原因有来自于部分子的作用，也有来自于末态强子物质的诱导。
As for the k production in high energy hics, we firstly study k + production . the results show that the kaon flow is sensitive to both the kaon-nucleon sigma term ( s and the equation of state of nuclear matter . the collective flows of both nucleons and k + mesons need a " soft " eos with compressibility k ? 00-300 mev, and 2 = 200-400 mev seems suitable to explain the measured k + flow 研究表明k~+集体流在相对论重离子碰撞中对核态方程和k-n标量吸引项(_(kn))都是敏感的，计算结果表明核子和k~+介子的横向集体流都需要压缩系数在k200-300mev范围内较软的核态方程，而大约为200-400mev的_(kn)值对解释k~+流产生是合适的。
