relativistic approximation 中文意思是什麼

relativistic approximation 解釋
相對論性近似
  1. The relativistic random phase approximation ( rrpa ) is a relativistic extension of the random phase approximation for studying microscopically nuclear dynamical excitations and giant resonances. the consistency of rrpa calculations requires two aspects : first, it demands that the relativistic mean - field wave " function of nucleus and the particle - hole residual interactions in the rrpa are calculated in a same effective lagrangian. second, the consistent treatment of rrpa within rmf approximation requires the configurations including not only the pairs formed from the occupied fermi states and unoccupied stat es but also the pairs formed from the dirac states and occupied fermi states

    自洽的相對論無規位相近似理論的自洽性要求有兩方面的內容：第一，描述原子核的激發態性質和基態性質時必須從同一個有效的拉矢量出發；第二，相對論無規位相近似計算，不但要考慮正能的粒子-空穴組態的貢獻，而且還要考慮從fermi海核子態到dirac海負能核子態形成的對激發的貢獻。
  2. Very recently, schiller and muether at tubingen university suggested a new decomposition approach of the dbhf g matrix, and used to calculate the nucleon self - energy. they, sepa rate the g matrix into a bare nucleon - nucleon interaction v and correction term a g. the projection method is only applied to the correlation term a g, which is parameterized by four pseudo - mesons. then the nucleon self - energy in the dbhf can be calculated with the g matrix in the relativistic hartree - fock approximation

    裸相互作用部分，即單玻色子交換勢v對核子dirac自能結構的貢獻可以通過相對論hartree - fock方法得到，只把關聯部分用投影方法處理，並參數化為四種具有無窮大質量贗介子的交換，耦合常數與質量的比值是常數，從而關聯部分g對核子自能的貢獻也可以通過相對論hartree - fock方法求得。
  3. 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

    本文應用相對論dirac - brueckner - hartree - fock （ dbhf ）方法，利用新的g矩陣分解方式g = v + g ，用g矩陣在相對論hartree - fock近似下，即等效的dbhf方法，系統地討論了對稱、不對稱核物質及中子物質的性質，利用對稱及不對稱核物質中自能的dirac結構，我們提取出含有核子-核子短程關聯效應和同位旋結構信息的有效相互作用介子耦合常數，並對有限核的性質做了詳細的討論，得到不少有意義的結果。
  4. In connection with the researches carried out in our laboratory, the description is concentrated on the high accurate four - component relativistic density functional methods with relativistic effects taken into account strictly, and the two - component or scalar relativistic density functional methods with relativistic effects considered approximately, involving the zero - order regular approximation ( zora ) method and its improved variants, the singularity excluded approximate expansion ( seax ) method, and the jointed two component - scalar relativistic ( or non - relativistic ) approach applicable to the calculations of large systems locally containing heavy elements

    結合本實驗室的研究工作，重點介紹嚴格處理相對論效應的四分量相對論密度泛函計算方法和近似處理相對論效應的兩分量和標量相對論密度泛函計算方法，包括零級規則展開近似（ zora ）方法及其改進和排除奇點的近似展開（ seax ）方法，以及適合處理局部包含重元素大體系的接合兩分量標量相對論（或非相對論）計算方法。
  5. Thus ， for instance ， it may come as a shock to mathematicians to learn that the schrodinger equation for the hydrogen atom is not a literally correct description of this atom ， but only an approximation to a somewhat more correct equation taking account of spin ， magnetic dipole ， and relativistic effects ； and that this corrected equation is itself only an imperfect approximation to an infinite set of quantum field - theoretical equations

    因此，舉例來說，對數學家而言，了解到下述情形可能會令其驚愕不已，即薛定諤（ schrodinger ）的氫原子方程式並非是對該原子作出的一種絕然正確的描述，而僅僅是個近似值，趨近於一個在某種程度上更為正確的將自旋、磁性偶極子、以及相對論效應考慮在內的方程式；而這個得以糾正的方程式就其本身而言也只是一個不完美的近似值，趨近於無窮無盡的一整套量子場論方程式。
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