isovector 中文意思是什麼
isovector
解釋
等矢量-
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
為了使我們提取的有效相互作用能夠準確地再現出dbhf計算的核狀態方程以及密度依賴的不對稱能，我們採用第二種萬法提取有效介子核子耦合常數，即要求在對稱核物質中，每個密度處ilif計算出的標量自能及總結合能與dbhf給出的標量自能及總結合能一致，提取出。 -
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
將相對論無規位相近似理論推廣應用到奇特核集體激發態的研究，發現對于奇特核的同位旋矢量激發模式在很低能量下會出現軟模式的巨偶極共振，這主要是由於費米面附近粒子-空穴激發所形成的。 -
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
計算結果顯示，從fermi海核子態到dirac海負能核子態形成的對激發在核的集體激發中的貢獻很重要，尤其是對核的同位旋標量激發模式。 -
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
在核的同位旋標量激發模式中， dirac海負能核子態在不同的共振模式中的貢獻程度不一。對于同一種激發模式， dirac海負能核子態的貢獻隨著核子數的減少而變弱。 -
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
利用這樣的耦合常數在rmf近似下計算的核物質的結合能與dbhf結果會有偏離，因而得到的核狀態方程也會有偏離，如在飽和點處結合能有小於2的偏差。
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