symmetry breaking 中文意思是什麼

symmetry breaking 解釋
對稱破裂
  • symmetry : n. 對稱；勻稱；調和；勻稱美。 bilateral symmetry 左右對稱。 radial symmetry 輻射對稱。
  • breaking : n. 1. 破壞；損傷；中斷；折斷；【電學】斷路。2. 馴獸，訓練。3. 【語音】音的分裂。4. 〈pl. 〉亞麻下腳。
  1. There has been many papers to discuss the in - medium quark and gluon condensates in nuclear matter which use the models with su ( 2 ) l su ( 2 ) r sym - metry. now, we make use of the chiral model su ( 3 ) l su ( 3 ) n including the baryon octet to discuss the quark condensate < qq > in strange matter, where q is an up or down quark field. on the one hand, from the experimetal data, it is found that < qq > vac = - ( 225 25mev ) 3, on the other hand, with the hellmann - feynman theorem, quark condensate can be evaluated on the hadronic level. in this paper, we will investigate the quark condensate in strange matter with the chiral symmetry su ( 3 ) l x su ( 3 ) rspontaneous breaking lagrangian to obtain the variation of the quark condensate in the strange matter when the baryon number change. it can be applied to understand the neutron stars when the neutron star are considered to be constructed by the strange matter. because nertron stars are homogeneous and at very low temperature, we will use the mean - field approximation and zero temperature throughout this paper

    鑒于已有大量文獻討論了核物質中的夸克凝聚，本文將討論在奇異物質中的夸克凝聚。而在介質中的夸克凝聚的基本公式可由hellmann - feynman理論導出，所以運用手征對稱自發破缺拉氏量以及平均場近似，我們就可以討論在奇異物質中的夸克凝聚，由所計算的結果表明： （ 1 ）奇異物質中的夸克凝聚隨奇異物質密度的增大而單調減小。 （ 2 ） -凝聚的出現對衰減率有影響。
  2. In quantum chromodynamics ( qcd ), vacuum is not trivial, that is, vacuum carry quantum numbers. such a behavior is embodied by non - perturbative con - densates of quarks and gluons. since hadrons are excitations with respect to the vacuum, hadronic properties are ultimately related to properties of the vacuum. based on the vacuum structure, some hadron properties have been described well. in the low energy region, qcd has two very important proper - ties : chiral symmetry spontaneous breaking and confinement, which are closely related to the vacuum characteristics of qcd. much experiments and theoretical studies have shown that chiral symmetry spontaneous breaking is very important to understand the low - energy feature of the strongly interacting physics, and the quark condensates give an expression to chiral symmetry spontaneous breaking. according to goldstone ' s theorem, the goldstone bosons with zero mass will emerge as the chiral symmetry is spontaneously broken. there are two ways : inear and non - linear methods to carry out this constraint. in our paper, we will use the non - linear method

    大量實驗和理論研究表明，手征對稱自發破缺對于理解低能強相互作用十分重要，而夸克凝聚又是導致手征對稱自發破缺的因素。按goldstone理論，伴隨手征對稱自發破缺應該會有零質量的goldstonebosons產生。而對于這一條件的實現有線性和非線性兩種方法本文將用非線性的方法將手征對稱自發破缺應用於su （ 3 ）模型即重子八重態，得出描述其強相互作用的手征對稱自發破缺lagrange密度。
  3. In this paper, we take a way which realizes this constraint by a nonlinear method and generalize the chiral effictive model to su ( 3 ) including the baryon octet. by this means, we obtain the chiral symmetry spontaneous breaking lagrange density which depicts the strong interactions

    本文採用對這一條件進行非線性實現的方法將手征自發破缺的等效模型推廣到su （ 3 ）模型，即重子八重態，得出描寫強相互作用的手征自發破缺的lagrange密度。
  4. 3. a dimensionless parameter i. e. breaking symmetry a is defined which reflects the characteristic of molecular arrangement in non - symmetric lc cell, the expression is where d is the distance between the maximal tilt angle 0m and the below substrate, l is the thickness of lc cell

    定義了一個反映不對稱液晶盒液晶分子排列對稱性特點的無量綱量? ?對稱破缺，定義式為= （ d - l / 2 ） / （ l / 2 ） ，其中d為傾角最大值_ m距下基板的距離， l為液晶盒的厚度。
  5. Once landau theory of phase transition was used to deal with ferroelectrics phase transition. it introduces symmetry breaking into phase transition theory and associates it with order parameter to find the necessary condition of occurrence of phase transition. the theory has settled plenty of problems

    對于鐵電體，以前採用landau理論處理連續相變，這一理論引入對稱破缺，並將它與序參量的變化聯系起來，找到發生連續相變的必要條件，這成功地解決了一些問題。
  6. This paper includes a number of contributions on how to harmonize the macro and micro, global and local, random and structural, order and disorder, simple and complex, and so on, which is the significant task for the complexity exploration. it is research course that is more important than others, but still several conclusions have been drawn as follows : regional speciality lies in spatial complexity, the process of spatial complication starts from symmetry rebuilding in macro - level while symmetry breaking in micro - level which accounts for emergence of complex regularity, and the target of geographical evolution seems to reconstruct the symmetry laws of nature

    標度律是全文的邏輯核心，通過它們將城市系統的宏觀與微觀、整體與局部、有序與無序、隨機與確定、簡單與復雜、對稱與對稱破缺等對立問題有機地統一起來。盡管如此，本文還是得出了一些基本結論:所謂地理學的區域獨特性實則空間復雜性，微觀層面的對稱破壞與宏觀層面的對稱重組是「突現」和空間復雜化的動力根源，城市系統自組織演化的優化目標似乎就是重建大自然的對稱律。
  7. All the contents are developed around a set of scaling laws taking the form of exponentials which relate to almost all the issues of complexity including fractals, chaos, strange attractors, localization, and symmetry breaking, etc. the main work can be summarized as follows : starting from the law of allmetric growth three fractal dimensions in a broad sense are derived, and according to these dimensions, geographical space is divided into three levels, i. e., real space, phase space, and order space, each of which corresponds to a kind of dimension. based on the idea of spatial disaggregation and using the rmi ( relationship - mapping - reversion ) principle, the urban system is formulated as three scaling laws of the three spaces, including number law, size law, and area law, which can be transformed into a set of power laws such as allometric law and zipf ’ s law associated with fractal structure

    從異速生長律的縱向、橫向和切向三個角度將地理空間劃分為實空間、相空間和序空間，分別對應于空間系列、時間序列和等級序列三個層面，每個層面的測度各有自己的空間維度。基於「空間循環細分-等級體系-網路結構」的數理等價關系，利用rmi （關系-映射-反演）原則，成功地實現了城市系統宏觀模型的理論抽象，將空間復雜性問題表徵為簡單的指數式標度定律（包括數量律、規模律和尺度律） ，這一組標度律可以與一組冪次定律（包括具有分形性質的規模-數目律、異速生長定律和三參數zipf定律）互為變換。
  8. This course examines how randomization can be used to make algorithms simpler and more efficient via random sampling, random selection of witnesses, symmetry breaking, and markov chains

    這課程研究如何用亂數並透過隨意抽樣、隨機選擇證物、破壞對稱以及馬可夫鏈使得演演算法更簡單和更有效率。
  9. Chiral symmetry spontaneous breaking and confinement are two very important properties of low energy qcd

    手征自發破缺和色禁閉是低能qcd的兩個重要性質。
  10. The influence of the flexoelectric effect on the threshold voltage, the saturation voltage and the symmetry breaking parameter is discussed and calculated carefully

    撓曲電效應對閾值電壓、飽和電壓和對稱性破缺參量有重要影響。
  11. Inverse symmetry breaking may be the inherent character of the non - hf dft exchange functionals

    說明反對稱破壞可能是沒有hf的dft交換函數的內在性質。
  12. Inverse symmetry breaking was a common phenomenon for the dft results for the radical ion with two equivalent fragments

    反對稱破壞是dft方法在處理離子問題時電荷平均分佈在兩分子片上的一個共同現象。
  13. Moreover, the director distribution symmetry to the mid layer of nlc celliias been broken by the flexoelectric effect. a new parameter a is introduced to express the symmetry breaking and has been investigated in detail

    此外，本文還證明了撓曲電效應還會導致指向矢分佈對中間層平面對稱性的破缺，引入並詳細研究了表徵對稱性破缺的參量。
  14. The study of simple high order symmetry - breaking bifurcation point

    簡單高階對稱破壞分歧點的研究
  15. Influence of chiral symmetry spontaneous breaking on neutron star

    手征對稱性自發破缺對中子星的影響
  16. In the case of the dimensionless eccentricity 0. 5, if there are larger regular zones in the time - periodic chaotic flows, the efficiency of chaotic mixing can be improved using corresponding symmetry - breaking sequences, otherwise the efficiency of time - periodical flows is better than of the corresponding symmetry - breaking aperiodic flows

    通過數值計算比較時間周期和非周期對稱破壞序列的混沌混合，發現對稱破壞序列並不一定總能破壞周期混沌混合的常規區，並提出對稱破壞序列優于周期序列混合的前提條件。
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