isovector meaning in Chinese
等矢量
Examples
- Using the fully consistent rrpa method , we have studied the properties of collective multipole excitations for several closed - shell and closed sub - shell nucleus in the isoscalar modes and isovector modes
计算结果显示，从fermi海核子态到dirac海负能核子态形成的对激发在核的集体激发中的贡献很重要，尤其是对核的同位旋标量激发模式。 - A significant difference on the scalar self - energy and effective mass of neutrons in asymmetric nuclear matter , especially in neutron matter , is observed . the difference would result in an unreasonable sigh of the extracted effective couplings for isovector mesons
利用这样的耦合常数在rmf近似下计算的核物质的结合能与dbhf结果会有偏离，因而得到的核状态方程也会有偏离，如在饱和点处结合能有小于2的偏差。 - The results indicate that the effects of the dirac sea states are pronounced in the collective multipole excitations for nuclei , especially on the isoscalar giant modes , but become weaker for light nuclei , while the contributions on the isovector modes are negligible
在核的同位旋标量激发模式中， dirac海负能核子态在不同的共振模式中的贡献程度不一。对于同一种激发模式， dirac海负能核子态的贡献随着核子数的减少而变弱。 - This should be an incentive to apply the rrpa method with non - linear effective lagrangians to study other systems such as unstable nuclei near drip lines . for nuclei with the extreme value of n / z , low - lying collective excitations are found in isovector dipole modes , which are mainly due to the particle - hole excitation of weakly bound states near fermi surface and the isospin mixture effect
将相对论无规位相近似理论推广应用到奇特核集体激发态的研究，发现对于奇特核的同位旋矢量激发模式在很低能量下会出现软模式的巨偶极共振，这主要是由于费米面附近粒子-空穴激发所形成的。 - 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。